Products / Milcor M-1 Single Leaf Roof Hatch

The M-1 is Milcor's single-leaf personnel roof hatch, model 3501-501-9, with a 36 in. by 30 in. opening. The product page describes a 14 gauge galvanized steel cover and curb in white powder coat, a cover with a 22 gauge liner around 1 in. rigid styrofoam insulation that opens to 90 degrees on a gas spring, a 12 in. curb with integral counterflashing, 3-1/2 in. pre-drilled mounting flanges and 1 in. exterior fiberboard insulation, an EPDM gasket, and a slam latch with inside and outside handles and padlock hasps. It gives a 70 psf load capacity and a unit weight of 185 lbs., and lists Florida Product Approval #16737 under the 2023 code version.