Closed-Head Overhead Projector: The overhead projector with closed-head style has an enclosed mirror and lens with adjustment controls on the outside of the enclosure. The closed-head design reduces dust built-up on the lens and mirror that is common on the open-head styles.

Closed-Head Overhead Projector
Closed-Head Overhead Projector

LCD Projectors: LCD projectors are contemporary devices that take images from video, photos, documents, and computers and project through a prism, separating light into red, blue, and green LCD panels. LCD stands for liquid crystal display.

Mounted Projector: A mounted projector is one that has been fixed in place to a ceiling, wall, or other location. Projector mounts are available for most projectors, simplifying use while providing reliable setup position in line with the target projector screen so it doesn’t have to be repositioned and adjusted for each use.

Open-Head Overhead Projector: The open-head overhead projectors have the visible, exposed mirror and lens that can be manually adjusted for proper projection angles to meet the screen or board.

Overhead Projector Carts: Overhead projector carts are custom-designed to hold an overhead projector on the top shelf or within the top shelf. The top shelf may be flat with lip edges, for placing the overhead projector directly on top. The top shelf may also have a cutout style, where the projector fits into the cutout region, resting on the shelf below, and providing one or two platform shelf surfaces to the left and/or right of the overhead projector stage. The overhead projector carts often have a built-in handle that can serve as a cord-wrap station for power cord or extension cord.

Overhead Projector: Overhead projectors have a backlit stage for use with transparency sheets and a mirror and lens for projecting the image onto a wall, board, or projection screen.

Portable Projector: Portable projectors can be moved from one location to another in order to serve a variety of purposes. The portable projectors have flexible use while a mounted projector has a more fixed position.

Projectors: Overhead projectors and LCD projectors transmit an image, document, picture, or other visual aid to a display board or projector screen for larger viewing, often with the option to adjust the size for better visibility. These projectors support a variety of uses, and some are mountable for ceiling or other positioning to enhance performance.


Adjustable Mounting Brackets: Adjustable mounting brackets connect to walls and have an adjustable depth to hold projection screens at a desired distance from the wall and surroundings. The adjustable depth allows projection screens to remain smooth, for uninterrupted viewing and undistorted images.

Open-Head Overhead Projector
Open-Head Overhead Projector

Auto-Stop Screen Motor: The motorized projection screens have auto-stop feature that stops when the screen is fully extended or retracted to prevent damage to the roller and motor mechanisms.

Casters: Casters are found on the base of select audio equipment to enable rolling mobility. Some cases have two casters on one side (front or back) and a handle for tilting and rolling similar to rolling luggage styles. Other cases and equipment may have four casters, such as storage carts and mobile lecterns.

Double Hem: The hem of projection screens is double-stitched for reinforcement to prevent frayed edges and help maintain the smooth screen for quality viewing.

(Built-In) DVD/CD Player: Sound systems with a built-in CD player or CD/DVD player are able to support standard CDs and/or DVDs, and some styles can play MP3 files burned to a CD or DVD recordable disc.

EYB Lamp: The EYB bulb is generally used in overhead projectors and other devices. The design of the EYB bulb or lamp has a very long life compared to standard light bulbs, offering exceptional quality performance in projector units.

Fan Motor: The overhead projectors have built-in fans, motorized to circulate air and cool the inner workings of the projector for lasting performance. The fan helps prolong the life of the overhead projector by preventing overheating and protecting the interior components.

HDMI Input: HDMI stands for High-Definition Multimedia Interface. Projectors with HDMI input have ports that accept HDMI cables that allow the projector to receive and project high-definition images.

High/Low Switch: A high-low switch on overhead projectors allows the light to be brightened or reduced depending on the room lighting and visibility needs.

IR Remote ControlSound systems with IR remote control have a classic-style infrared remote control for operating the controls at a distance. The infrared design requires a line of sight to the device in order to operate properly.

Locking Mechanism: Locking mechanism on projection screens enhances the steel roller and prevents the screen from tearing away from the roller for lasting secure assembly.

Masking Borders: Masking borders refer to the framing edges of projector screens. The masking borders are offered as an option on many projector screen styles and form a frame-like appearance to the screen by covering the edges along the sides.

Matte Projector Screens: Matte projector screens have non-glossy, matte finish for smooth projected image and video viewing.

Needle-Stitched Hem: The side hems of the projection screens are needle-stitched, ensuring classic hem detail and precision to reduce the risk of fraying from use.

Non-Adjustable Mounting Brackets: Non-adjustable mounting brackets have a fixed size and depth for positioning on walls at a desired height and securely holding a projection screen at a fixed distance from the wall behind it. The measurable distance allows users to determine if the bracket depth provides enough room to clear other objects in the area.

Objective: The Objective refers to the components within the projector that gathers the light and images and projects for viewing. The Objective may be a single component with lens and/or mirror.

Projection Stage: The projection stage is the platform on which transparencies are placed on an overhead projector. The stage is usually backlit to send the images to the projecting head portion of the device.

Projector Fuse: Projectors often contain a fuse that protects from power surges. In some cases, the fuse may need to be replaced. The owner’s manual will provide diagrams and information regarding the fuse location, access, replacement fuse types, and replacement process.

Projector Interface Cable: A projector interface cable allows the projector to join with another device, such as a computer, laptop, Monitor, gaming console, or other equipment for projecting images through the projector from that other device. Projectors that include projector interface cable will have a cable designed to support that device and its connections.

Projector Mounts: Projector mounts allow projectors to be fixed to ceilings or other locations for optimum use. Most mounts include hanging hardware and specifications for setup and use, and the adjustable options on many projector mounts allow angled positions to ensure the image lines up with projector screen or display.

Projector Screen: Projection screens provide a smooth, light colored, usually fabric surface for images and video projected through an overhead or other projector unit. The screen usually retracts like a window shade into a storage case or other supportive structure and the rolling mechanism usually features automatic safety stops to protect the screen. The fabric is carefully selected for premium viewing of projected images and video, and select styles offer quality viewing even in partially lit settings.

Projector with Built-In Speaker: Projectors with built-in speaker have the ability to play sounds in conjunction with the visual projection.

Steel Roller: The projection screens are almost all attached to durable steel rollers that ensure lasting quality hold with tear-resistant assembly. The screen rolls or retracts into the case and the steel roller keeps the screen within the assembly and supports the weight of the screen during use.

Stereo/Mono: Stereo sound is produced using two or more channels of independent audio, creating the effect of multidimensional sound for a more natural presentation or listening experience. Mono sound refers to audio played with a single channel, generally lacking the natural sound experience. Devices listed as stereo/mono can accommodate both types of sound output.

T-Bar Twist Clips: T-bar twist clips have an X-style scissor design for gripping the T-shaped lower edges of T-bars or T-irons. The slips are closed over the lower edge of the T-bar and provide lasting support for different uses including the twist clips for mounting projection screens.

T-Bar Twist Clips
T-Bar Twist Clips

Thermal Cut-Off Switch: A thermal cut-off switch interrupts or halts electrical power going to an overhead projector when the switch detects temperatures in excess of a set value. The addition of a thermal cut-off switch protects equipment from overheating and provides safe operation of the device in classroom, lab, and office settings.

T-Irons: T-irons or T-bars resemble an upside-down T, providing edges for gripping. The T-Bar Twist Clips and similar clip attachments have a scissor-like design for clamping over the T-style edges of the T-irons or T-bars and provide strong hold for projection screens.

Top-Mounted Power Switch: Top-mounted power switches are easy to access for fast on and off activation and found on select models of overhead projectors.

Tripod Screen Stand: Select projection screens work with tripod stands for portable use. The tripod stand has three legs that stabilize the taller frame and the top supports a projection screen for versatile placement and use.

Ventilator: Ventilator usually refers to the air vents on the case containing the projector. Behind the vents, most projectors have a motorized fan, like the fans within computer units for keeping internal components cool during use. The ventilator section usually requires dusting, and in most cases a can of compressed air will do the trick to keep the fan operating properly and the vent clear for air circulation and heat dissipation.

Video PresenterA video presenter may be a device similar to document cameras in design, with video recording and playback functions. Video projectors can also present video through a monitor or display screen, depending on the technology configuration.

Wall ScreenWall screen may refer to projection screens mounted on walls or to wall-mounted markerboards with projection-ready surface. A projection-ready markerboard can serve as a projector screen without the need for an additional fabric screen, creating a cost-effective functional setup in classroom, office, or lab.

110-120V Power: The motorized projection screens have 110-120V power supply meaning they can be plugged into standard outlets in the U.S. but would require a power convertor if used in Europe or other 220-240V power region.

360-Watt ENX Lamp: The 360-Watt ENX Lamp is a halogen reflector bulb designed for projectors. The bulb has a reflective cone attachment enhancing the light bulb functionality for projecting images. The 360-Watt ENX bulb is relatively common and inexpensive, making it easy to replace when needed.

Construction Materials

Adjustable Wall Brackets: Adjustable wall brackets have a fixed height for fixed positioning and an adjustable depth to angle or position the screen around other objects in the area.

Friction-Free Projection Screen Case: Projection screens are composed of fabric and are subject to wear from use and storage. The projection screen cases offer friction-free storage for safe, lasting quality support.

Hanging Brackets: Hanging brackets mount to walls or ceilings and support projection screens for storage and viewing. The mounting brackets are easy to install, and contain hook-like attachments for quick projection screen setup.

One-Piece Steel Case: The one-piece steel case refers to the projection screen encasing. The use of a one-piece design reduces risk of broken parts and the steel construction provides lasting strength and appearance.

Rubber Vibration Insulator: Rubber vibration insulator enhances the projection screen casing to reduce noise from opening and closing the projection screen, particularly on the motorized screen designs.

Universal Hanging Brackets: Universal hanging brackets accommodate virtually any projection screen or projector, depending on the design, by offering standard sizing and connections that are relatively common for that particular product style.

Wall Mounts: Wall mounts attach to a wall and offer mounting of a projection screen with convenient hooks or other connectors that hold the screen encasing securely for premium viewing. The wall mounts allow the screen to be closed out of the way and stored in place for future use.


AC/DC PowerAC power refers to alternating current. Alternating current involves an electrical current that reverses the direction of flow. This is the most common type of power supply for electronic equipment in the U.S. DC power refers to direct current electricity, which has a one-direction flow and commonly used for batteries and generators.

Annotation Tools: Annotations are comments or other “markup” that can help explain or enhance images, slide shows, presentations, and videos. Annotation tools allow users to add annotations, and the tools also often allow users to style the annotations for visual effect or preference.

Any-Angle Viewing: Projection screens that offer any-angle viewing have designs that reduce or eliminate keystone or image distortion. The design accommodates viewing from straight, below, or the sides making the screen ideal for groups and classrooms.

AVI File FormatAVI or Audio Video Interleave is a Windows-specific video file format. AVI files are widely accepted for upload on websites, such as Facebook and YouTube, but the file format is often converted to MP4 format for better quality video performance.

Balanced or Equal Light Reflection: The majority of our projector screens boast equal light reflection or balanced light reflection, indicating that the projector screen surface is finished in a way that provides light distribution when images are projected. The balanced reflecting surface improves image quality for uniform brightness and clarity.

Cord management System: Overhead projectors, projector carts, and many school and office elements in our collections have integrated cord management to keep power cords neat and safe. Cord storage compartment, bins, and cord wraps built into the designs of the furniture, carts, or devices accommodate cord storage when not in use.

Constant Brightness Levels: Constant brightness levels typically refer to a uniform brightness of projected images for clear, comfortable viewing. The balanced design of our premium projector screens offers equal light reflection for more constant brightness across the screen.

Contrast Ratio: Contrast ratio refers to the ratio of brightness to darkness, or the ratio of the brightest possible color to the darkest possible color that a given device can produce. A monitor or display with a 4000:1 contrast ratio indicates that the brightest colors are 4000 times brighter than the darkest colors.

Eco Mode: Eco mode allows the device to operate at lower power levels or to save power when not in use. The energy-saving feature is designed to save on costs and improve performance of the device while offering the “green” operating feature.

Embedded Networking: Embedded networking in select projector models allows multiple projectors to be controlled at once or managed over the existing LAN (local area network).

Flame-Retardant: Flame-retardant fabrics are used to design the projection screens, resisting fire in the event of an accident or spark exposure.

Green Features: Green Features refer to environmentally friendly paints, finishes, processes, and the use of recycled materials in the production of select furniture and equipment.

Individually Tested: Projection screens are individually tested to ensure each screen is in high-quality working order before being sold and shipped to buyers at schools, libraries, and businesses.

Keystone: Keystone is an effect that occurs when a projector and projection screen are not properly aligned. The keystone effect is basically image distorting, often in a trapezoid-like angled shape rather than the desired square or rectangular shapes.

Keystone Eliminator: Some projector screens include a keystone eliminator to reduce distorting in projected images when the projector and screen are not properly aligned.

Lamp Life: Lamp life is the length of time a projector lamp or bulb can burn or operate.

Light Conditions: Light conditions refer specifically to the lighting in the room or location in which the projector is being used.

Lumen: Lumen is a measurement of visible light. With regard to projectors and overheads, the light output is measured in lumens as a way to standardize the device specifications making them easy to compare.

Maximum Width for Mounting Brackets: Mounting brackets indicate a maximum width for placement. The brackets are installed separately to walls and should not be further apart than the maximum allowable width to ensure best results and safe setup for use with projection screen.

Mildew-Resistant: The premium projection screen fabrics resist mildew. Moisture in environments and humid weather can be unavoidable; the mildew-resistant projection screens will stand up to exposure to the elements without mildew growth and stains.

MOV Format: MOV format is a video file format compatible with Windows and Mac operating systems, although the .mov file extension is associated almost exclusively with QuickTime, an Apple product. The MOV format typically indicates the file contains multiple items or tracks, specifically video, audio, special effects, and other content used together. Files with a .mov file extension are generally played in QuickTime players or converted to different formats, depending on needs.

Power Consumption: Power consumption refers to the amount of electricity used by a device and is usually calculated by multiplying the wattage of the machine by the hours of use. The value is generally given in Joules.

Projected Image Dimensions: The dimensions of the projected image refer to the height and width of the image displayed. Dimensions are usually calculable by the projector's throw ratio. The image size helps determine the appropriate projection screen size for best quality performance.

Projection Distance: The projection distance is the maximum allowable distance from the projector to the projection screen. The distance should be no more than the maximum allowable distance stated in the specific documentation for that projector to ensure the image quality and overall performance.

Projection Enlargement: Projection enlargement is the ability to enlarge images, video, or other projected elements for better viewing.

Projection Resizing: Projection resizing allows the images or video projected to be enlarged or shrunk down for better quality display and more comfortable viewing.

Projector Dimensions: The dimensions of a projector, particularly LCD projectors, refer to the length, width, and height of the actual projector. These dimensions are essential for mounting properly and determining the appropriate mounting, installation, or storage support.

Projector Mains: The Mains is the AC (alternating current) power supply for the device.

Projector Screen Sizes: Projector screens come in a variety of sizes to suit different locations and needs. Among the variety of projector screens offered, we have sizes ranging up to 12-feet as well as smaller sizes.

Projector Throw Ratio: The throw ratio refers to the projected image size based on the distance of the projector from the screen. A 2:1 throw ratio would indicate that a projector placed 20-feet away from the target screen would project an image about 10-feet requiring a screen of at least 10-feet in size.

Rack and Pinion Focusing: Rack and pinion focusing utilizes a classic gear-style design that rotates, usually by a control knob, and the rotating gear moves a rack or rail-like component with coordinating gear-teeth. The classic overhead projector designs have rack and pinion focusing knobs to adjust image display.

Recycled materials: Many products are made with some or all recycled materials. These items are listed as having “Green Features” and detailed descriptions will specify that portions or all of the product design were made using recycled products.

Software Options: Software options typically refer to the choice of Windows or Mac computer support. Some software can operate on both systems, while other software requires a product selection to ensure compatibility with the target computer system. Users operating a Mac with Virtual PC or other PC-function have some flexibility in that they can choose either the Mac software and run the program in the organic Mac OS or choose the Windows software and run it in the virtual PC.

Standard and Widescreen Options: Standard image projection generally takes a 4:3 aspect ratio, similar to the screen dimension of classic television sets. Widescreen options are generally made with a 16:9 aspect ratio for a wider image display.

Tear-Proof Design: The premium-quality designs of the projector screens include reinforced stitching and tear-proof assembly, reducing the risk of damage from frequent use. The tear-proof design includes a secure connection to the roller within the top case that resists the screen tearing from the enclosure. The designs also include double-stitched hems to reduce fraying at the edges.

Voltage: Voltage refers to the electrical device's electric potential. In the U.S. most electronics are designed for 110-120V making them safe to plug into wall outlets in any U.S. facility.

Weather-Resistant: Weather resistant indicates the case or design can tolerate exposure to hot and cold weather environments as well as light wind or rain, but should not be confused with “waterproof” designs. Weather-resistant construction is not necessarily waterproof, but can protect the equipment in light rain such as during transport, setup, or event cleanup.

Zero to Low Emission Materials: Zero emission and low emission materials refer to the production materials and processes used in creating select products. These production materials do not discharge significant quantities of pollutants or other damaging substances making the designs greener, healthier, and more life-friendly.