Therma-Tru door lite for wood, steel and Fiberglass Doors May fit other brands like Benchmark, Ceco, Masonite, Jeld-Wen, Pease, Pella, Stanley, and others when dimensions match, will NOT work on Peachtree doors. Can be installed in flush or hinged doors with panel designs that match shape of the surround White surrounds are paintable, the buff or dark color glass frames are stainable. Application: New or Replacement Door Glass with Frame This size was normally used on Side lites. Glass Type: Leaded / Frosted Insulated, Zinc Grids, Tempered Safety Glass Door Thickness: 1-3/4 inch TIP-TIP Surround: 10-1/4 x 44 Actual Glass Measurement: 8-1/2 x 42 Insulated Glass Thickness: 1 inch Door Cut-Out Hole: TBD - see note 2 NOTE 1: These are New, Discontinued size. Limited to existing inventory. No Refunds, No Returns NOTE 2: When cutting out a flush or panel door, we suggest making a cardboard template. The template can be traced from inside frame part.