Park Ridge Vinyl Oval Fixed Window with Brass Geometric Leaded Glass, 20" x 28" Triple pane 1" in thick insulated glass promotes energy efficiency The supplied interior trim kit telescopes from 4-1/2" in. to 6-1/2" in. to accommodate a wide variety of installation conditions Vinyl frames and trim kits are maintenance free Pre-punched mounting flange makes for very simple installation Industry leading limited lifetime warranty This is an aftermarket of generic part