Fire Rated for 30min Doors Includes intumescent liner, fitting instructions and main bolt fixings Telescopic design (will fit 40-80mm wide doors) Size measurements: 272 x 70mm OUTER with 221 x 37.5mm APERTURE (see diagram in listing photos) Available in SAA, Polished Silver or Polished Gold flap finish (all black frame) Fire, Smoke, Security and Acoustic tested (test evidence available on request) Can be secured using four wood screws for 80mm width (fire rated screws needed, NOT provided), Manufacturer: Firestop