2ft and 4ft Enclosures Suitable for Wall or Ceiling Mounts. Special Wide Throw Distribution Reflector System. Continuous Poured Closed Cell Polyurethane Gasket. Impact Resistant, Linear Ribbed Acrylic Frosted Lens (RAFL) Standard, Linear Ribbed Clear Polycarbonate Lens Optional. Stainless Steel Mounting Brackets for Drill Free Mounting. Polycarbonate Latches (Std), Stainless Steel Available (SS Opt).