Trident perimeter door set seal designed to restrict noise, smoke and air movement.  The seals are manufactured from co-extruded PVC and offer excellent deflection and a high memory recovery rate. Available in white, brown or black. Trident perimeter door set seal with push fit fixing Minimal closing force with multi-point contact Can be used as a perimeter or threshold seal Decibel rating: 40dB Supplied in 1 x 2.1m lengths Groove Width: 2.7 – 3mm Groove Depth: 8mm Tested to BS EN ISO 10140-2: 2010