From the Anvil Heavy Bean Thumblatch

The thumb piece passes through the door and raises the latch bar off the keep. To restrict the latch bar movement a screw-on staple pin is provided. For use on doors with maximum thickness of 55mm. The product has bigger proportions than the medium thumblatch and is designed for use on larger doors. DIMENSIONS: 228mm Handle Length 140mm Thumb Bar Length 205mm Latch Length FINISH: Beeswax Black Pewter

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