Bolt through heavy duty tubular latches, tested and passed to BS EN 12209 British standards. Double sprung and designed for use with all of our unsprung door knobs. Also suitable for use with any other unsprung door knob/lever handle.
Tip: We advise choosing the 4" size for all unsprung door knobs to prevent knuckles catching on the door surround.
- Material: Steel.
- Finish: Epoxy Black & Nickel.
- Style: Fire Rated Heavy Duty.
- Supplied with matching forend, keeper & fixings.
- Fire rated CE 1211 & Certifire approved CF 5532.
- 3" (55mm backset)
- 4" 980mm backset)
- For detailed dimensions see PDF & DWG drawings.