Bomar 900 Series Molded Hatch Square. A 2-Dog White Hatch has quick action dogs, collect arm and vent position with a Smoke color acrylic lens. Options Sold Separately: Trim ring (GT 910-1 black, GT 910-2 white) and screen (GS 910-18 black, GS 910-28 white).
Hatch Opening: 9 3/16": x 9 3/16" (230mm)
Outside Deck Flange: 11 1/2" x 11 1/2" (292mm)
Outside Lid: 11 3/16" x 13 1/16" (300mm x 306mm)
Cutout: 9 1/2" x 9 1/2" (241mm)
Cutout Radius: 1 1/4" (32mm)
Weight: 3 1/2"