Curtain tracks (Model 1600) shall be of 16 gauge aluminum, consisting of two side-by-side runways entirely enclosed except for slots in bottom, and shall be in one continuous piece except where splicing clamps are required. Curtain carriers (Model 1131) shall be spaced on 6" centers (4" centers optional) and shall be composed of a non-wheel-binding block supporting two polyethylene wheels rolling on two parallel treads. One end of the track shall contain a Dead-end pulley (Model 1634) with a 1-1/4" dia. steel ball-bearing wheel adjustable for cable tension. The other end shall be equipped with a 1/30 HP gearmotor with limit switches activated by the drapery carriers. Start-stop-reverse action shall be provided by a magnetic control system and push button type remote control switches. Model 160 as manufactured by Automatic Devices Company of Allentown, PA.
