Specification - FS1720-FL - 12" x 12" x 6" Floor Area and Indirect Sanitary Waste Drain With Flange. MIFAB series FS1720-FL - 12" x 12" x 6" 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.