SS304; size: 8*8mm
SS304; Thickness: 3mm
CE UKCA EN12209/DIN18251/EN1634-1
240mins (Steel door); 90mins (Timber door)
Mortise lock passage function
Passage mortise lock also called latch mortise lock, means the latch bolt can be operated by lever handle both the inside and the out side at any time. The function of this mortise lock is never will be locked, which can be widely used in the passage in public buildings.
Projection of latch bolt of mortise door lock
Latch bolt is a very important part of mortise lock, which plays a crucial role in fire resistance and smoke control performance. The dimensions of the latch bolt comply with DIN18251 standard for use in fire and/or smoke control doorsets:
Grade 3, according to European standard EN12209/DIN18251
Reversible latch suitable for DIN left and DIN right doors
72mm center distance ,60mm backset
Fire rated 240mins on steel door ; 90mins on timber door
Passed 200,000 test cycles
Corrosion resistance 240 hours
Stainless steel 304 material
Jianhua can provide various types and shapes of stainless steel lever handle to match the passage mortise door lock. For the shapes we can supply U-shape lever handle, L-shape lever handle, etc. For the types, we can manufacture lever on rose and lever on backplate.