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The casement fasteners are designed to work correctly on a pair of rebated windows with the assumption that the windows (sashes) are in one plane (flush) with each-other when closed.
Some older windows can warp over time, meaning that one sash will sit some distance forward from the other when closed. There is a tolerance of about 3mm built into the design of the casement fastener, but if there is a larger discrepancy than this the adaptor plate is available to be used as a packer behind either the keeper or the teardrop handle backing plate in order to bring them both closer to the same level, making operation more convenient.
Specifications:
Estimated Delivery Time Frame:5 Business Days
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Reference ID: 1407347
