Trap Doors Type K
Type K Trap Door - 150 PSF Hinged Cover is aluminum construction, single or double-leaf design with engineered lift assistance for one-handed operation. Cover is 1/4 inch steel diamond patterned plate. Lifting mechanism is cam-action hinges pivoting on torsion bars, providing controlled operation and checking downward motion when closing. Hardware is zinc plated and chromate sealed. Finish is mill plated with bituminous coating applied to the frame exterior. Available in four frame opening dimensions.
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Literature
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