T-H Marine HAT1317-2-DP Polar White Access Hatch Non-locking Dimensions: Outside: 12-3/4" x 17-3/4" Inside: 9-5/16" x 14-3/16" Cut-out: 10-1/2" x 15-1/8" T-H Marine introduces the most innovative design ever available in access hatches plates. These hatches plates provide an attractive and economical way to access horizontal or vertical storage areas. Watertight - lid overlapping frame Two separate seals on frame and lid No visible fasteners Corrosion-free integrated hinge Hinges allow 180-degree opening Also available in lockable version