Boat part number 1040578 is a new stern seat plate from Ocean Yachts, part number 4219-3000 .
This plate is constructed out of aluminum, and measures approximately 18 3/8" W x 11" H x 1/4" D overall. Mounts with (4) 3/16" diameter countersunk holes set apart 3 1/8" center to center.
Specifications: