From The Anvil .5″ Rebate Kit for Tubular Mortice Latch, Aged Brass – 51825 AGED BRASS

Designed for use when fitting a tubular mortice latch to rebated doors (doors that overlap one another when closed)nnFinish: Aged BrassnnDimensions:nnRebate Set: 1/2″ (13mm)nnEasy to fit and suitable for use on doors 40mm to 50mm thicknnIf you are unsure if your doors are rebated, here is a simple way to check: Close the doors and if you can pass a piece of paper through the centre, they are NOT rebatednn