Size 54 Medium Profile HatchIdeal as a foredeck hatch on larger offshore yachts, the Medium Profile has thicker acrylic and deeper frame sections for greater strength and durability. It features Lewmar&&';;s unique sealing system, allowing for easy acrylic replacement. All while retaining the smooth, modern lines of the low-profile hatch.Features: Outside handles allow the hatch to be opened from the deck if it is not locked Friction levers hold the lid open in any position up to 95Adeg Anodized aluminum frame for corrosion resistance Curved upper frame profile for strength as well as modern styling A full range of spare parts is available Specifications: Lower Frame: 9/16 in. Acrylic Color: Smoke Grey Hatch Weight: 14.3 lb. Acrylic Window Thickness: 1/2 in. Length: 18-1/4 in. Width: 22-3/4 in. Height: 1-1/4" Radii R: 2-7/8 in. Cut-Out Length: 15-7/16 in. Cut-Out Width: 19-15/16 in. Cut-Out Radii R1: 1-11/16 in.