Doors provide safe access to darkrooms, photo and x-ray labs, inflatable buildings, graphic arts studios, and radiology facilities. Permanent doors attach directly to wall. Pop-out doors are designed for break-away installation in case of emergency or for transfer of large equipment. Doors are black and constructed of Dow Lustran ABS or 20-gauge, cold-rolled, electrically pre-coated, anti-corrosion treated steel. Steel parts are coated with black matte paint to reduce reflection of stray light. Gaskets and felt sealing strips ensure outside light and dust will be sealed off from room when door is in operation. Other features include stationary black rubber floor, internal handrail, external finger grips for operation from outside, and fluorescent markers for operation in dark. Windows are designed for convenient transfer of cassette, film, and specimen materials to and from protected space. Windows are constructed of Dow Lustran ABS and have similar features as doors. Install windows 91-107cm (36-42") above floor to avoid safety hazards. Ordering Information: All doors and windows come with manufacturer's 30-month warranty. Doors requiring wall opening widths of 137cm (54") or more are ADA handicapped accessible and require wheelchair ramps.