Watco Manufacturing C48100-CP Nufit PresFlo Trim Kit Carded, Chrome Plated Requires a minimum I.D. opening size of 1.49-Inch and at least 0.85-Inch of depth clearance Maximum O.D. coverage of flange is 2-7/8-Inch PresFlo kits do not require crossbars in previous strainer body Stopper simply snaps into place Brass body fits into existing strainer body secured with provided silicone adhesive