Specification - P6060-FL - 6in Wide Heavy Duty Stainless Steel Trench Drain with Anchor Flange MIFAB series P6060-FL - 6in wide heavy duty trench drain with anchor flange constructed of 14 gauge, Type 304 stainless steel complete with anchor tabs and radiused bottom. Free area of 46.56 square inches per 3 ft. section. Standard with ANSI rated "Heavy Duty" slotted Type 304 stainless steel grates with a load rating of 5,000 to 7,500 lbs.