The Front carpet is what is heavy on our cars when carpets are concerned...There is alot of foam under the carpet and it makes it weigh a hella lot...I would guess 15 to 20 lbs....It is heavy..Mine is gone..If you take the front carpet out expect it to get very hot in your car while driving..We just took mine out for a drive today and I don't see how the ECU can take all that heat...