This wc door lock can be used with virtually any internal door, it is available in two sizes & two finishes. View our You Tube video " How to Fit a Bathroom Lock to an Internal Door" Please do not order the CBS55wc, CBV31wc or the CBG2wc handles with this lock, it should have the larger wc handles ordered which incorporate a turn button such as the CBS54WC etc. Please only choose the "BAS" options below if purchasing Serozzetta handles & Turn buttons. Related Products AQ11 Bathroom Turn & Release Bathroom Indicator Bolt [LAC] AA12 Bathroom Thumb Turn & Release [LAC]