SUGGESTED SPECIFICATIONS: projection screen(s),(H) x (W), electrically operated 120 volt (60Hz), notmore than 2.4 amp. Shall have specially designed motor mounted inside theroller, to be three wire with ground, quick reversal type, oiled for life, withautomatic thermal overload cutout, integral gears, capacitor and an electricbrake to prevent coasting. To have preset but adjustable limit switches toautomatically stop picture surface in the “down” position. The roller to be ofrigid metal. Screen fabric to be flame retardant and mildew resistant fiberglasswith black masking borders standard. Bottom of fabric shall be formed into apocket holding a metal rod. The ends of the rod shall be protected by heavy-duty plastic caps. Case to be of wood with metal-lined wiring compartment. Asection of the bottom of the case shall be a door equipped with hinges so thatit opens and closes automatically with the lowering and raising of the picturesurface. When the picture surface is being lowered, the door shall drop openby gravity. When the picture surface is being raised, the two ends of the slat inthe bottom pocket of the screen fabric shall engage two hooks on the door tolift it to the closed position where the door will engage a micro switch that willcut off the electrical current to the motor. The balance of the bottom of thecase shall be a second hinged door with manual opening to provide access.Hinges shall be mounted to allow matching of the doors to the ceiling. Case tobe finished with a black primer coat, ready to accept final finish by others. Tobe complete with three position control switch with cover plate. Screen to belisted by Underwriters’ Laboratories.SPECIFICATION DATAVideo (NTSC 4:3) Format Dimensions (2" Standard Black Drop at Top)Viewing Area (H x W) Nominal Diagonal Overall Length of Case Approx. Ship. Wt.In. Cm In. Cm In. Cm Lbs. Kg43" x 57" 109 x 145 72" 183 731⁄2" 187 72 32.750" x 67" 127 x 170 84" 213 831⁄2" 212 80 36.357" x 77" 145 x 196 96" 244 971⁄2" 248 90 40.860" x 80" 152 x 203 100" 254 971⁄2" 248 91 41.369" x 92" 175 x 234 120" 305 1091⁄2" 278 101 45.887" x 116" 221 x 295 150" 381 1331⁄2" 339 136 61.7105" x 140" 267 x 356 180" 457 1571⁄2" 400 164 74.4120" x 160" 305 x 406 200" 508 1771⁄2" 441 188 85.3HDTV (16:9) Format Dimensions (2" Standard Black Drop at Top)Viewing Area (H x W) Nominal Diagonal Overall Length of Case Approx. Ship. Wt.In. Cm In. Cm In. Cm Lbs. Kg45" x 80" 114 x 203 92" 234 971⁄2" 248 91 41.352" x 92" 132 x 234 106" 269 1091⁄2" 278 101 45.854" x 96" 137 x 244 110" 279 1131⁄2" 288 112 50.858" x 104" 147 x 264 119" 302 1211⁄2" 309 122 55.365" x 116" 165 x 295 133" 338 1331⁄2" 339 136 61.778" x 139" 198 x 353 159" 404 1571⁄2" 400 155 70.390" x 160" 229 x 406 184" 467 1771⁄2" 451 188 85.3Wide (16:10) Format Dimensions (2" Standard Black Drop at Top)Viewing Area (H x W) Nominal Diagonal Overall Length of Case Approx. Ship. Wt.In. Cm In. Cm In. Cm Lbs. Kg50" x 80" 127 x 203 94" 239 971⁄2" 248 91 41.3571⁄2" x 92" 146 x 234 109" 277 1091⁄2" 278 101 45.860" x 96" 152 x 244 113" 287 1131⁄2" 288 112 50.865" x 104" 165 x 264 123" 312 1211⁄2" 309 122 55.369" x 110" 175 x 279 130" 330 1271⁄2" 324 133 60.3721⁄2" x 116" 184 x 295 137" 348 1331⁄2" 339 136 61.787" x 139" 221 x 353 164" 417 1571⁄2" 400 155 70.3100" x 160" 254 x 406 189" 480 1771⁄2" 451 188 85.3Square Format Dimensions (Screens With ^ Have 2" Standard Black Drop at Top)Viewing Area (H x W) Overall Length of Case Approx. Ship. Wt.In. Cm In. Cm Lbs. Kg50" x 50" 127 x 127 631⁄2" 161 64 29.060" x 60" 152 x 152 731⁄2" 186 73 33.170" x 70" 178 x 178 831⁄2" 211 83 37.784" x 84" 213 x 213 971⁄2" 248 95 43.16' x 8'^ 183 x 244 1091⁄2" 278 101 45.88' x 8' 244 x 244 1091⁄2" 278 105 47.67' x 9'^ 213 x 274 1211⁄2" 309 112 50.19' x 9'^ 274 x 274 1211⁄2" 309 119 54.08' x 10'^ 244 x 305 1331⁄2" 339 134 60.810' x 10'^ 305 x 305 1331⁄2" 339 141 64.09' x 12'^ 274 x 366 1571⁄2" 400 164 74.412' x 12' 366 x 366 1571⁄2" 400 168 76.2Boardroom Electrol®Automatic Electric Projection Screen Model