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B&Q£9.50Visit shop B&Q - 3 Lever Mortice Chrome Sash Lock Key 2.5" 64mm Bolt Through Reversable Bathroom Handle Locks
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The Betley Butterfly 3 Lever Mortice Sash Lock is a reliable security solution designed for homeowners and contractors seeking a robust locking mechanism for domestic, commercial, or industrial doors. Featuring a durable 64mm case and a versatile reversible latch, this lock provides excellent security for entryways, sheds, and garages, though users should note that the 3-lever design is best suited for general security rather than high-risk external door applications.
| Colour | Black |
|---|---|
| Brand | Betley Butterfly |
While durable, a 3-lever lock is generally recommended for internal doors, sheds, or gates rather than primary high-security front entrance doors.
No, this product is the mortice sash lock mechanism only. Handles must be purchased separately.
Please check your local building regulations regarding fire door specifications, as specific certification is often required for fire door hardware.
The backset is approximately 44-45mm, which corresponds to the 64mm (2.5 inch) case width.
The finish is designed for durability in normal use, though it should be protected from impact with sharp objects to prevent chipping.
Use the Easi-T reversal feature to pull and rotate the latch head without needing to open the main lock casing.
Ensure the lock is perfectly aligned in the mortice; if the door has warped, the strike plate may need adjustment to prevent friction.
To install, measure the depth of your door to ensure the 64mm (2.5 inch) case provides the correct backset. Use a sharp chisel to clear the mortice recess, ensuring the forend sits flush with the door edge. The reversible latch can be rotated by engaging the Easi-T mechanism usually accessed via the front of the case. For maintenance, keep the moving parts lubricated with a light silicone-based spray to prevent sticking. Avoid using harsh chemical cleaners on the black finish; a soft, damp cloth is sufficient to keep the surface free from dust and debris.
