【Package Includes】-This door weather stripping total length 40 feet (12.19M), Width: 3/8 inch (9 mm); Thickness: 1/4inch (6 mm); Suitable for 5/32 to 1/4 inch gaps (4 to 6 mm). (NOTE: Please measure the width of the recess gap before purchase.)【Multi-layer Soundproof Holes Design】-Our door weather stripping with multi holes design, which can reduce sound waves layer by layer so that can reduce sound transmission on both sides of the door. At the same time, these holes can effectively reduce the pressure between the door and the door frame when closing the door,thereby reducing the sound of closing the door.【Flexible & Durable Silicone Material】- Our door seal is made of flexible silicone material(different from the rubber material used by other brands) our product will not freeze or break under extreme temperatures, Same smooth interior and exterior,Excellent Flexibility,High Resilience,Good Aging Resistance, Super Durable, with a long service life.【Easy to Cut and Install】-One of the standout features of this weather stripping is self-adhesive backing, which allows easy installation without any special tools . Simply measure the length and width of the gap you need to seal, cut to size and apply it to the door frame. Note: 1> Please clean and dry the surface before applying for better performance. 2>Please use a hair dryer to heat the adhesive backing,if the stickiness decreases due to the weather.【Wide Application】-You can use this weather stripping seals between a variety of two substrates that have even or uneven gaps, such as: doors(house,garage,auto,RV,etc.), windows,hatches,electrical enclosures,coolers,and more.【Multi-function】-Our weather stripping door seal is an efficient and easy-to-use solution that seals gaps around door frames to help maintain a comfortable temperature in your home. It can be used to prevent wind, dust, sound,cold and creepy crawlies , protect doors and windows, and reduce wear and tear when they open and close.【No Risk Purchase】- All our products are covered with our FAST free replacement or FULL refund ! If your have any questions or feel unsatisfied in any way, feel free to let us know and we will reach you at the soonest.