Seadog Drain Cover 2-1/2" S/S 331601-1 by Seadog $3.24 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Seadog Drain Cover #354-3316011 Stamped 304 Stainless Vent Size: 2-1/2" Area .85 Sq. In. Fasteners: #6 RH