Requires a minimum I.D. opening size of 1.39-Inch and at least 0.39-Inch of depth clearance * Maximum O.D. coverage of flange is 2-7/8-Inch * Lift and Turn kits do not require crossbars in previous strainer body * Stopper screws into crossbars in the NuFIT strainer body * Brass body fits into existing strainer body secured with provided silicone adhesive