Door Window Frame Kit, Material Steel, Opening Height 12 In., Opening Width 12 In., Window Height 10 In., Window Width 10 In. Use the NGP low-profile lite kit for 3/16", 1/4", or 5/16" glass (not included) in 1-3/4" thick hollow metal or wood doors. Frame is made from 18-ga. cold-rolled steel with mitered and welded corners and welded reinforcing clips at corners. Kit includes 3/8" glazing space, countersunk mounting screw holes, plus hardware. Dark bronze finish.
Very Sturdy and well built. Easy to install, good air flow and is built so as to prevent any see through. Screws for installation were supplied and this is a very good product