Seat Use 4 each 5/16" x 3/4" NC bolts 18 TPI (not included), Fully waterproof vinyl, Made By: An OEM supplier, Depth: 21 11/16 ", Multi-hole mounting pattern, Central drain, Height: 15 1/2 ", Width: 18 ", Corrosion resistant, Yellow color. Replaces Part Numbers: John Deere AM123666, John Deere AM103153, John Deere AM103189, John Deere AM107972, John Deere AM108654 Stens Part Number: 420-185