God Bless This Home. Attractive and inspiring this doormat insert fits perfectly into our doormat base to create a look you will love; this doormat insert fits snugly side to side with a little gap on the top and bottom so as not to create a tripping hazard. Made with mildew-resistant polyethylene terephthalate fibers it helps to quickly clean and dry shoes. Rubber backing holds insert firmly in the base. Size of insert is approximately 22x10. Insert only - doormat base tray sold separately SKU# 20018.