GU Ferco Upvc Door Lock 4 Roller Cams, 35mm Backset. Can Also Connect to Shootbolt Corners via the Teeth Grooves Below the Faceplate if Required. UPVC Screws. Backset: 35mm. It also has teeth behind the faceplate to fit to shoot bolts if it is required, if they are not used or required, simply ignore them as they will not cause any issues.
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