ANCHOR HATCHES ANODIZED ALUMINUM RECTANGLE 16" X 24", Stainless steel trim ring with attached gasket. This hatch cover has six locking points.

Clear opening: 14" X 22"
Cover: 15.75" X 23.75"
Deck cut out: 16.25" X 24.25"
Outside flange diameter: 19.25" X 27.25"

This hatch requires a wrench to open, item # PE-T-WRENCH (sold
separately).

Recommended fastener is #12 316 stainless steel tapping screws (.75" to 1.00" long depending on deck thickness)
ISO 12216 standard, 2,400lbs total load with pressure applied evenly across the cover