Suits up to 50mm standard hole. Order Spacer rings if fitting to a 54mm hole. Backset for privacy sets where the latch is included is 60mm only. The passage set comes with no latch so that must be ordered separately. Code for the latch is: ""LATDS60-finish" - A passage is for normal doors in your home i.e bedroom, between rooms etc. The privacy set comes with the latch. - A privacy is for snib locking doors in your home i.e bathrooms, toilets, studies etc. The dummy kit converts a single lever into a dummy. The code for the dummy kit: MDUMKIT - Dummies are used on pantry doors, wardrobes etc and have no mechanical function. 63mm rosette - suits 50mm crossbore hole. Concealed fixing. Limited Guarantee: 10 years mechanical. 5 years finish.