Completely sealed steel housing ¢ Housing and door frame are gasketed ¢ Flush aluminum door ¢ T-slot steel hinges ensure a snug door fit ¢ Doors are secured by spring loaded latches and hinge from either side ¢ Designed for installation in 1" or 1-1/2" wide T-bar ceilings ¢ White powder coat finish, painted after fabrication ¢ UL listed, meets Federal Standard 209E, rated for Class 1,000 cleanrooms ¢ Wet or damp label available on most models