Reduce noise to aid comfortable driving with our range of underfelt. Underfelt is a must to support your carpet and lengthen the life of the set. This is a traditional jute felt and meets the British Standard BS4790 for fire retardancy. The use of such high standard raw materials goes hand in hand with our carefully controlled manufacturing processes to produce hard wearing, high quality products. Please note that the Standard underfelt has a width of 1.37m (54") and is approximately 1/4 to 1/2" thick.Underfelt is also available latex backed one side. Classic Car Carpets / CoverYourCar - Established 2005.