Specification - FS1530-FL - 8" x 4" x 4" Floor Area and Indirect Sanitary Waste Drain With Flange. MIFAB series FS1530-FL - 8" x 4" x 4" deep cast iron floor area and indirect sanitary waste drain complete with white acid resistant porcelain enamel coated interior, loose set grate and anchor flange with weepholes. Anti-splash aluminum dome strainer included.