Da-Lite > Product Information > Specifications > Giant Screens     SUGGESTED SPECIFICATIONS: DA-LITE'S GIANT REAR PROJECTION SCREENS Rear projection screens shall be Da-Lite's Giant as furnished by Da-Lite Screen Company, Inc., Polacoat Division, Blue Ash, Ohio. Screen shall be single element with two active lens surfaces. The back surface to be a Fresnel lens with a pitch of .5mm and the front surface to be a lenticulation array with a pitch of 0.8mm. The horizontal 1/2 gain angle to be 21° + 3° and the vertical 1/2 gain angle to be 11° +2°. On axis gain shall be 3.0 + 0.5 and part thickness shall be >1/4". MAINTENANCE Da-Lite's rear projection screens are designed for a long, useful life. Properly installed and cared for, they will produce high quality images for many years. Listed below are recommended methods to clean and handle each of Da-Lite's screen surfaces.   CLEANING To clean the front surface: Use a soft, clean cloth and Da-Lite Lenskleen. Spray or moisten the cloth and gently wipe in the direction of the lenticulations. DO NOT SPRAY DIRECTLY ONTO THE SCREEN'S SURFACE. To clean the rear surface: Use a vacuum cleaner with a clean, soft brush attachment only. Do not use liquids as over time residues may accumulate in Fresnel groves.   HANDLING Upon receipt of crates inspect immediately for concealed damage Store Da-Lite's screens upright in a cool, dry place. Protect from water and excessive humidity. Do not lean or lay flat. DO NOT EXPOSE TO TEMPERATURES HIGHER THAN 100°F (43°C). Keep screens in their shipping crates until they are installed. Open crates with screw driver only. Do not use suction cups.   FRAMING FOR REAR PROJECTION SCREENS Select frame from the CAD Drawings Page.     For pricing information, please contact Media Fabricators, Inc. via e-mail at [email protected] or via telephone at 323 937 3344.