Whether you are building your own car audio speaker or subwoofer box or wanting to recover your existing one, this under-felt carpet liner is for you. This under-felt carpet is durable and allows for simple installation. It is easy to cut and mold to fit your car audio speaker box. Stands up to heavy use and even has UV protection against sun exposure.【Size】Fixed Width:78 inch.It is wide enough to fit most application.Thickness:1.5mm-2mm(60mil).Thin and soft material，Easy to cut, Good at stretching over slightly uneven areas install and shape into the required shape or size.It flattens out very nicely and conforms around corners and crevices well. It's a very forgiving material.If you need to paste, you may need to glue.【The advantages】The non-woven fabric is made of 100% polyester fiber, which is durable and not easy to spread, and can withstand a large amount of use.Gas resistance, oil resistance, salt resistance and fading resistance, with good color fastness and UV resistance, it is the best choice for car interior carpets lining and subwoofer box decoration.【Reduction Sound】Perfect for Acoustic Applications,Reduce vibration,Moisture-proof and absorb heat,Bring you quality acoustics.Also can used this product on the underside of counter that is washer or dryer and other electronic products. you will noticeable reduction in sound now that the fabric is there. 【Great Decoration&DIY】Provide protection while being a great decoration, restore your vintage speaker's appearance to like-new condition, Great carpet for adding a softer touch to a vehicle conversion or renovation.suitable for speaker DIY or repair. 【Widely used】Carpet liner are not only suitable for trunk mats, dashboard mats and car interiors of cars and ships, but also very suitable for speaker sub-box carpets, household carpets, desks and any places that need protection. Specifiction:1) Material: 100% Solution Dyed Polypropylene 2) Width: 78 inch3) Colors: Choose Your Color4)Thickness:1.5mm-2mm(60mil) Benifit:【PROTECTIVE AUTO CARPET 】Van lining carpet made of polyester is UV-resistant and acoustic. Flexible Material Allows it to mold to almost any shape. It molds perfectly around wheel arches, windows and metal work with ease.【REDUCING NOISE】Van lining carpet made of polyester is UV-resistant and acoustic, and it is also suitable for speaker boxes, door panels, dashboards etc.【DUSTPROOF & SCRATCH-RESISTENCE 】Protect the speakers and audios from being easily scratch. Restore your vintage speaker's appearance to like-new condition!Here's some pro installation tips...Have a box of razor blades handy and change them often! Sharp blades are the key to doing a good job. If the carpet isn't cutting like butter replace the blade. Carpet blades work best but utility knives are good too. Avoid the small flat blades for window scrapers. Make sure you have a flat metal straight edge. This is necessary for precision cuts and seems. If possible, when wrapping a box, overlap carpet and make a single cut for a perfect seem. Always keep seems in places where they will look good. Use a good quality spray adhesive. The best products will allow you to immediately re-position the fabric and fix an error. Avoid contact cement, it dries too quick and can be messy. Spray an adequate amount of adhesive to cover the surface you're working on. Use a thinner layer on the carpet itself. Smooth the carpet on the surface and allow to dry. Covering and cutting smaller areas at a time will often yield the best results. Carpet will attract sawdust, lint, and dirt. Make sure your work area is clear before you start your project. Course cleaning brushes work best on the material. Finally, think about what you're doing and take your time! Hopefully those few tips will help you out. With a little practice carpeting almost anything is pretty easy. There's no simpler way of getting a professional looking finish. The pictures are of the actual product and were taken by us so you can see exactly what you are getting.With fast and free shipping, 60 day returns, and free return shipping you simply can't go wrong! Note: Due to the nature of this product, if it is opened, there is no refund nor exchange.1:Please allow 1-3 mm error due to manual measurement and Sometimes the goods may squeezed in the term of delivery2:Please understand that colors may exist chromatic aberration as the different placement of pictures3:If your order 2 pcs quantity ,The item will be sent in continuous length and don't be cut into pieces.4:No Adhesive back with 78 inch Width and 1.5-2 mm thickness Select the size you need