Works with 65mm Pivot Setback Door Patch Fittings For 10 and 12 mm Glass The 90 Degree Left/Right Hand Sidelite Mounted Transom Patch is used to support a transom from a sidelite glass panel. It comes with a WDINT300 Insert for mounting a door with WDPh41A Top Door Patch Fitting. The Insert can also be moved on the non-hinged side, allowing for a double swing door. A WD1NT306 Transom Patch Door Stop Insert can be used to create a one way door. GLASS FABRICATION REQUIRED: Three 19mm dia. holes and one corner notch; Door and Panels Flat Polished; No Mitres Required.