The Timloc Thermo-loc FR 30 minute fire rated cavity closers have the thermal conductivity of 0.036W/mK and exceeds the minimum thermal resistance path of 0.45m2K/W. They provide an effective DPC and thermal barrier between frame inner and outer wall leaf.The rigid profile extrusion is suitable for all frame and sill positions, making the Thermo-loc FR 30 minute fire rated cavity closers durable and resistant to decay.Extremely environmentally friendly, Thermo-loc FR has a global warming potential of zero and Ozone depletion potential of zero too. Please note: Thermo-loc Fire Rated Cavity Closers (2.4m) come in a pack of 5 lengths. Thermo-loc Fire Rated Cavity Closer Specifications Cavity Width: 125mmUnit Length: 2.4mLengths Per Pack: 5 LengthsFire Rating: 30 Minutes Features and benefits An effective DPC and thermal barrier between frame inner and outer wall leaf Thermal conductivity of 0.036W/mK Suitable for all frame and sill positions Durable and resistant to decay Global warming potential of zero Ozone depletion potential of zero Can be used in both first and second fix applications Suitable for cavities up to 300mm Suitable for timber and masonry walls Quality Independently tested by Exova Warrington Fire LABC Registered Detail BBA Approved Satisfies NHBC Standards Manufactured to BS EN ISO 9001 and BS EN ISO 14001 Complies with Building Regulation Approved Documents C, B, L1 & L2 Complies with Robust Details ‘limited thermal bridging and air leakage’ Complies with the Scottish Building Standards ‘Technical handbook’ Satisfies BRE document ‘Thermal insulation: avoiding risks’ Meets all relevant British Standards