Product Info Catalog Hardware Window Screen 10-Inch x 21-37-Inch Extension Window Screen 10-Inch x 21-37-Inch Extension Window Screen Request a Quote UPC: 77578055596 Manufacturer: Thermwell SKU: 193573 Model Number: AWS1207 10" x 21" - 37", Louver Metal Rail Extension Window Screen, Extends From 21" To 37", Painted Metal Rails & Varnished Wood Ends, Extra Sturdy Tenoned Corners Keep Screens Square, Zinc Plated Nails.