2X2 HIGH OUTPUT CLEANROOM LED RECESSED FIXTURE Housing:   One piece, robotically seam welded, hole free 20-gauge CRSconstruction. Each are only 5.8 inches tall. Door Frame:   One-piece overlapping style 18-gauge CRS or 20-gauge type 304 stainless steel or aluminum door frame with 90° perimeter bend, hinged to housing with two stainless steel cables. Secured by captive stainless steelscrews. Reflector:   Die formed metal with high reflectance white polyester powder coat finish. Typical ...