Baldwin 0052.324 Package Size Letter Box Sleeve, Satin Stainless Steel Designed for use on exposed doors to prevent wind from forcing rain and snow through the slot Very large opening will accommodate small packages The product is manufactured in China For use with #s 0015 and 0017 11 3/8"W x 2 3/4"H x 1 11/16"D For use on 1 3/4" thick doors