M-D Building Products 11742 Threshold Oak 3/4X3-1/2X36 in, 36" L x 3-1/2" W x 3/4" H, Natural Natural wood provides an ideal thermal barrier Solid hardwood for beauty and durability Easily stained or painted to match floor or door trim Seals gaps up to 3/4 inch high 3-1/2-inches wide by 3/4-inch high by 36 inches long