Series W1N Access Covers SPECIFICATION: The W1N (single leaf) access frames and covers as manufactured by Halliday Products, Inc. of Orlando, Florida shall have a ¼- in. thick one-piece, mill finish, type 316 stainless steel frame, incorporating concrete anchor plates 18-in. on center. A 1-½-in. drainage coupling shall be located in the front left corner of the channel frame. Door panel(s) shall be 3/16-inch stainless steel diamond plate reinforced to withstand a live load of 300 lbs. psf. Door(s) shall open to 90 degrees and automatically lock with T-316 stainless steel hold-open arm(s) with anodized aluminum release handle(s). For ease of operation the hold-open arm shall incorporate enclosed stainless steel compression spring assists. Door(s) shall close flush with the frame. Hinges and all fastening hardware shall be T316 stainless steel. Unit shall lock with T-316 stainless steel slam lock with removable key and have a non-corrosive handle. Unit shall carry a Lifetime guarantee against defects in material and/or workmanship.