The engineering team at Zirgo Sound Labs has specifically designed this kit for 99-06 F250 front doors interior. This kit includes all the correct material needed to reduce echoes, drones and unwanted rattles resulting in a quieter ride. The exclusive advance design of the open/closed cell foam wall helps remove unwanted sounds by absorbing background noise and reflecting radiant heat. This materials unique lightweight & durable design outperforms all other sound deadening products on the market today when compared by weight and flexibility making it the ideal choice of the professionals. Take the guess work out of what you need to do the job right the first time as this kit has the correct amount and gauge of material for optimal coverage. For industrial applications and world class performance you can install additional kits for multiple layers of material, adding maximum sound and heat reflection. Stop guessing on what you need, and get the right kit for your ride every time with Zirgos designer vehicle sound & heat reflecting systems, Please note this kit is designed for fitment on North American 99-06 F250 only. Additional material may be needed for the same/models sold in other parts of the world. Image is for reference only. The amount of material included in each kit will cover needed area.