https://multipointlocks.co.uk/locking-sash-jammer-for-composite-doors
Locking Sash Jammer for Composite Doors | uPVC Door Lock Specialists | MPL
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https://locksandhandles.co.uk/product/tss-upvc-locking-sash-jammer/
TSS UPVC Locking Sash Jammer - Locks and Handles
Jan 7, 2026 - These TSS locking sash blockers, supplied with packers come in two colours and are designed for use on UPVC windows. Each colour comes with 2 matching packers...
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