For hinged rebated or overlapping doors Reference 430 - 431 is mounted in place of 420 - 421 3 dimensions for doors of: - 40 to 66 mm thickness - 67 to 115 mm thickness - 116 to 165 mm thickness Standard parts length for doors of 60, 66, 115 and 165 mm thickness FEATURES: Made of composite - Invisible and tamperproof crossing screws - Interchangeable for left or right hand doors - Soft and quiet operation, easy opening - Hygienic: no visible screw - Extremely compact