This Medium Security Access Door is manufactured with heavy-duty materials to prevent unwanted access for installation in any wall or ceiling surface. Features Secure Door Solid Hinge Custom Sizing Specifications Model BMT/BMW/BMP Door 12-gauge Steel Frame 12-gauge Steel Size Min: 8 inches by 8 inchesMax: 36 inches by 48 inches Installation Wall or ceiling application Flange 1 inch Exposed, Drywall Bead or Plaster Bead Hinge Concealed Continuous Piano Finish White Powder Coat Warranty 1 year Options Flanges, Latches, and Materials Order Guide BASE FLANGE LATCH WIDTH X LENGTH OPTIONS BM X T - 1 inch FlangeW - Drywall BeadP - Plaster Bead M - Mortise Lock Prep (1-1/8")P - Pinned Allen Head Cam Latch(es)S - Pinned Allen Head Security Screw(s)D - Detention Lock Standard Sizes (in.)8 x 8 22 x 2210 x 10 22 x 3012 x 12 24 x 2412 x 18 24 x 3012 x 24 24 x 36*14 x 14 24 x 48*16 x 16 30 x 30*16 x 20 30 x 36*18 x 18 32 x 32*18 x 24 36 x 36*20 x 30 36 x 48* B - GalvannealedM - Masonry AnchorsS - Stainless Steel, Type 304 *Vertical openings only Rough opening is door size + 1/4 inch minimum. Additional sizes available, call for more information.