Barrier-free DURABASE® Shower Floor Model 360 and Entry Ramp model (360.100, 360.100BN) as manufactured by E.L. Mustee & Sons, Inc. Shower floor to be one-piece, molded fiberglass, using matched metal molds under extreme heat and pressure. Surface to be slip-resistant design that does not interfere with flow of water. Size: 30 x 60 in. Shoulder will be not less than 3-1/16 in H or less than 1-1/4 in W. Tiling flange will extend not less than 1 in higher than shoulder. Shower floors shall not have curb used in conjunction with 12 x 60 in entry ramp per ADA requirements. Drain available on right or left side, offset 8-1/2 x 15 in. Shall meet ANSI Specification Z 124-2011 1990.