Tubular Latch Fire Rated CE1121 are door latches passed to BS EN 12209 British/European standard requirements and are CERTIFIRE approved. These bolt through tubular latches are suitable for use with all sprung lever handles, including lever on rose door handles. When fitting with door knobs, please check that your door knob is sprung. CERTIFIRE is an independent third party certification scheme that assures performance, quality, reliability and traceability of fire protection products. Recognised by regulatory authorities worldwide, it is an internationally respected mark of fire safety and one of the most authoritative in the industry.