Product model W11188040 (AP6286990) replaces 4547258, PS12348757, W11135529,W11188040RC. Product Material Shelf Glas W11188040 freezer shelf made of high precision process 9H hardness Tempered Glass,3mm thickness reinforcement glass. Freezer glass shelf have good bearing performance,stronger and tougher than ordinary materials. Glass Shelf frame on both sides is made of food grade material, which is durable and safe. Product Type To ensure proper fit before ordering, please measure the area in which the glass fits before ordering to ensure a proper fit. The replacement glass insert is 17-5/16" Wide x 16-3/8" Deep.