The Electra Brail curtain is raised by lifting cables at 10 feet (3056mm) maximum distance apart and passes through rings attached to one side of the curtain. The cables terminate at the lower pipe and are concealed in individual pockets. In the raised position the folds of the curtain hang on one side of the lifting cables. The cables protrude approximately 1" (25mm) from the face of curtain in the down position, this needs to be considered when ordering this model. The curtains are supplied in vinyl or with an alternative material for the top portion as described in the options section below.

The system includes a thermally protected "C" flange reversing electric motor with a 60:1 double-output worm gear transmission sized and selected for the needs of the curtain. The 1.9" (48mm) diameter steel drive shafts are attached with flexible couplings to each output shaft of the gearbox. The drive shafts are supported by flange-mounted ball bearings at 10 feet (3056mm) maximum spacing.

The controls are directly accessible and contained in a supplied all steel enclosure. The electrical supply can be either 110 or 220 volt 20amp single phase and must be made available within 3 feet of the winch unless otherwise specified. A suitably located key switch box containing a 3 wire connected from the control box will need to be supplied by others. A key-operated 3 position-spring-loaded switch with suitable time delay is supplied for the control of the curtain operation.

Plated rings at 10 feet (3056mm) maximum centers are installed at 18" (455mm) vertical centers to accept lifting cables. Separate pockets are provided to conceal the cable clamps, no raw edges are visible.

The lifting cables are 1/8" (3.175mm) diameter 7 x 19 galvanized aircraft cable. Take-up reels are installed directly above the grommet lines. The top pocket of the curtain contains a 1.6" (40mm) diameter tube suspended by adjusting chains from the underside of the drive shaft support bearings. The bottom lifting pipe is also 1.6" (40mm) diameter tubing. All clamps and fasteners for the attachment of the winch and bearings to the underside of the beams or joists are also supplied and are all Grade 5 steel.

The drive shaft and all hardware is painted with gray primer.

The curtain is fabricated with 18 oz. (0.61 kg/m²) or 25 oz. (0.85 kg/m²) fire and smoke rated vinyl-coated polyester with similar appearance and embossed on both sides. Curtains can be supplied in solid vinyl or with the bottom 10 feet (3056mm) in solid vinyl with an alternative material for the top portion (see option at the bottom of this page). The top and bottom hems have end flaps to contain the support pipes. The curtain sides have double sewn hems.

The curtain has either vertical or horizontal welded seams overlapping by 1-1/8" (28.6mm) spaced at 5 feet (1528mm) intervals. The sides are hemmed over 2" (50mm) and quadruple sewn to provide a clean durable edge. The bottom of the curtain has a pocket of 8" (203mm) and double sewn with concealing pockets.

Options

Sport net

The lower 10 feet (3056mm) of the curtain is 18oz (0.61 kg/m²) or 25oz (0.85 kg/m²) of vinyl. The upper portion contains 1-1/4" square netting, coated to match the base color of the curtain. The curtain allows light and ventilation systems to function normally and does not break down from sport activities and continual use. All vinyl material on the top portion of the curtain is doubled to conceal the edges of the net and double sewn except on the to and transitional center bands which are quadruple sewn.

Achery

The lower 10 feet (3056mm) of the curtain is 18oz (0.61 kg/m²) or 25oz (0.85 kg/m²) of vinyl. The upper portion contains 3/16" heavy-duty natural color polyester archery netting. This net is extremely strong and is heat set for durability.

Note: Closeness of mesh construction reduces light transmission.

Fleximesh

The lower 10 feet (3056mm) of the curtain is 18oz (0.61 kg/m²) or 25oz (0.85 kg/m²) of vinyl. The upper portion is vinyl coated polyester mesh weighing 7oz (0.24 kg/m²) and is white in color. The mesh is treated for fire resistance and UV degradation.

Note: Not suitable for dusty environments.

All above materials may be substituted.

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