{"product_id":"dei-50101-boom-mat-under-carpet-sound-deadening-layer-54x48","title":"DEI Under Carpet Sound Deadening Layer - 48in x 54in","description":"\u003ch4\u003eSilence Road Noise and Heat With DEI Boom Mat Under Carpet Sound Deadening Layer\u003c\/h4\u003e\n\u003cp\u003eThe DEI 50101 Boom Mat Under Carpet Sound Deadening Layer is an 18-square-foot (54\" x 48\") two-material acoustic mat engineered to cut road noise, vibration, and heat transfer in any vehicle. Placed under carpet, on firewalls, or on any interior panel surface, the 50101 delivers a 5.6 dB(A) reduction in cabin noise, which DEI rates as a 25% improvement over leading competing products. The dual-layer construction pairs a flexible mass loaded barrier on top with an industrial-grade acoustical marine foam underneath, addressing both airborne sound and structure-borne vibration simultaneously. Whether you are building a custom interior, restoring a classic, or simply trying to make your daily driver quieter, the 50101 is the large-format under carpet material that gives you the most coverage per roll. DEI recommends layering the 50101 over Boom Mat Damping Material for the quietest possible result.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDEI 50101 Boom Mat Under Carpet Sound Deadening Layer, 54\" x 48\" (18 sq. ft.)\u003c\/li\u003e\n\u003cli\u003e5.6 dB(A) noise reduction, rated 25% better than leading competitors\u003c\/li\u003e\n\u003cli\u003eDual-layer construction: flexible mass loaded barrier (1 lb\/sq. ft.) over industrial acoustical marine foam\u003c\/li\u003e\n\u003cli\u003eReduces road noise, engine noise, vibration, squeaks, and rattles\u003c\/li\u003e\n\u003cli\u003eProvides thermal insulation to keep interiors cooler in summer and warmer in winter\u003c\/li\u003e\n\u003cli\u003e3\/8\" thick for significant noise and heat attenuation without excessive bulk\u003c\/li\u003e\n\u003cli\u003eInstalls under carpet, on firewalls, floors, and interior panels\u003c\/li\u003e\n\u003cli\u003eCan be mechanically fastened or adhered with Boom Mat Hi-Temp Spray Adhesive\u003c\/li\u003e\n\u003cli\u003eUniversal fit, works in any car, truck, SUV, or custom vehicle build\u003c\/li\u003e\n\u003cli\u003eDesigned to be used alone or over Boom Mat Damping Material for maximum NVH elimination\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e50101\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eDEI (Design Engineering Inc.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eBoom Mat Under Carpet (UC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e54\" x 48\" (18 sq. ft.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial Thickness\u003c\/td\u003e\n\u003ctd\u003e3\/8\" (0.375\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop Layer\u003c\/td\u003e\n\u003ctd\u003eFlexible Mass Loaded Barrier (1 lb\/sq. ft.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Layer\u003c\/td\u003e\n\u003ctd\u003eIndustrial Acoustical Marine Grade Foam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise Reduction\u003c\/td\u003e\n\u003ctd\u003e5.6 dB(A) reduction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoverage\u003c\/td\u003e\n\u003ctd\u003e18 square feet per roll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eUnder carpet, firewall, floor, interior panels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eUniversal (all vehicles)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdhesive Method\u003c\/td\u003e\n\u003ctd\u003eMechanical fastening or Boom Mat Hi-Temp Spray Adhesive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1 x DEI 50101 Boom Mat Under Carpet Sound Deadening Layer (54\" x 48\", 18 sq. ft.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cstrong\u003eWhat is the difference between DEI 50100 and DEI 50101?\u003c\/strong\u003e\n\u003cp\u003eThe 50100 is the smaller 24\" x 54\" (9 sq. ft.) version of the Boom Mat Under Carpet layer. The 50101 is the larger 48\" x 54\" (18 sq. ft.) version, offering twice the coverage. Both use the same dual-layer mass loaded barrier over marine foam construction. Choose the 50101 for floor and firewall coverage in a full-size truck, SUV, or van, or any build where you want to minimize cuts and seams.\u003c\/p\u003e\n\n\u003cstrong\u003eCan the DEI 50101 be used alone, or does it need to go over Boom Mat Damping Material?\u003c\/strong\u003e\n\u003cp\u003eThe 50101 works as a standalone sound deadener and thermal insulator and will provide meaningful noise reduction on its own. However, DEI recommends using it as a second layer over Boom Mat Damping Material for the quietest possible result. Boom Mat Damping Material addresses panel resonance and vibration at the metal surface, while the Under Carpet layer handles airborne noise and provides a thermal break. Together they create a comprehensive acoustic and thermal barrier.\u003c\/p\u003e\n\n\u003cstrong\u003eHow much noise does the DEI 50101 actually reduce?\u003c\/strong\u003e\n\u003cp\u003eDEI rates the 50101 at a 5.6 dB(A) reduction in cabin noise, which they state is a 25% improvement over the leading competitor's product. A 5.6 dB reduction is perceptually significant, as every 3 dB represents a halving of acoustic energy. For a vehicle with significant road, tire, or exhaust noise intrusion, this is a noticeable improvement in interior sound quality.\u003c\/p\u003e\n\n\u003cstrong\u003eIs the DEI 50101 heat resistant, and will it work on the firewall?\u003c\/strong\u003e\n\u003cp\u003eYes. The Boom Mat Under Carpet material is designed for automotive interior applications including firewalls, floors, and door panels where moderate underhood heat exposure can occur. The marine-grade foam bottom layer provides thermal insulation in addition to acoustic damping. For extreme underhood heat applications, DEI recommends adding their Boom Mat Damping Material first and topping with the Under Carpet layer for a dual thermal and acoustic barrier.\u003c\/p\u003e\n\n\u003cstrong\u003eDoes the DEI 50101 need adhesive to install?\u003c\/strong\u003e\n\u003cp\u003eThe 50101 can be installed by mechanical fastening or with DEI's Boom Mat Hi-Temp Spray Adhesive (part 10490). For flat horizontal surfaces like floors, mechanical fastening or weight from the carpet itself is typically sufficient. For vertical surfaces like firewalls and door skins, using the Hi-Temp Spray Adhesive ensures the material stays in position during installation and for the life of the vehicle.\u003c\/p\u003e\n\n\u003cstrong\u003eCan the DEI 50101 be cut to fit irregular shapes?\u003c\/strong\u003e\n\u003cp\u003eYes. The 50101 cuts easily with sharp scissors or a utility knife. The large 18-square-foot format gives you plenty of material to work with when trimming around floor cutouts, seat bolt locations, and irregular panel shapes. Score the mass loaded barrier side and flex to cut cleanly, or use heavy-duty scissors for a single-pass cut.\u003c\/p\u003e\n\n\u003cstrong\u003eWill the DEI 50101 make a difference in a truck or SUV with a lot of road noise?\u003c\/strong\u003e\n\u003cp\u003eYes, especially when installed over the floor and firewall. Trucks and body-on-frame SUVs typically have minimal factory sound deadening compared to unibody cars, and the large-format 50101 is an efficient way to cover the cab floor, transmission tunnel, and firewall in a single application. Combined with Boom Mat Damping Material on the metal panels, the 50101 can produce a dramatic improvement in interior sound quality for pickups and full-size SUVs.\u003c\/p\u003e\n\n\u003cstrong\u003eWhat is the DEI 50101's warranty?\u003c\/strong\u003e\n\u003cp\u003eDEI (Design Engineering Inc.) stands behind the quality of their Boom Mat product line. Contact DEI directly at their support line or through their website for specific warranty terms and any installation questions specific to your vehicle or application.\u003c\/p\u003e\n\n\u003ch4\u003eInstallation Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eRemove seats, carpet, and any trim panels as needed to expose the bare floor and firewall areas you intend to treat.\u003c\/li\u003e\n\u003cli\u003eClean the floor surface thoroughly and remove any existing OEM sound deadening, rust, or contamination. Allow to dry completely.\u003c\/li\u003e\n\u003cli\u003eMeasure and mark cut lines on the 50101 mat using the surface area dimensions. Use a sharp utility knife or heavy-duty scissors to trim to shape.\u003c\/li\u003e\n\u003cli\u003eFor flat floor sections, lay the 50101 foam-side down and press firmly into place. Use mechanical fasteners if needed to secure edges.\u003c\/li\u003e\n\u003cli\u003eFor vertical surfaces such as firewalls or door skins, apply Boom Mat Hi-Temp Spray Adhesive to both the panel surface and the mat back, allow to tack, then press firmly into place.\u003c\/li\u003e\n\u003cli\u003eOverlap seams by 1\" where multiple pieces meet to eliminate acoustic gaps.\u003c\/li\u003e\n\u003cli\u003eReinstall carpet over the completed mat layer. The 3\/8\" thickness is designed to allow carpet to reinstall cleanly without requiring seat or trim adjustments on most vehicles.\u003c\/li\u003e\n\u003cli\u003eReinstall all trim, seats, and hardware. Test for any squeaks or rattles before returning the vehicle to service.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"DEI","offers":[{"title":"Default Title","offer_id":46008557600847,"sku":"DEI50101","price":127.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/dei-under-carpet-sound-deadening-layer-48x54.png?v=1783180752","url":"https:\/\/www.blackopsautoworks.com\/products\/dei-50101-boom-mat-under-carpet-sound-deadening-layer-54x48","provider":"Black Ops Auto Works","version":"1.0","type":"link"}