Sound Deadening

I'll be adding some to my Duster when I get to the interior. Trying to keep the weight down, but think the benefit of the sound deadening material will offset the weight gain. Approximately how much weight will this add...ball park? Would one brand be lighter than another? Just curious.

Thanks folks,
Pat

The products website should have weight per sq ft stats posted somewhere. If that doesn't work see how many sq feet you need then see what the shipping weight for the amount you need will be. Should be dang close to the total weight you will add to your car.