I used the Owens Corning kits. R-8 insulation value and really reduced the sound coming in through the door. It took me about 3 hours to do both the 2-car door and the golf car door, have to buy 2 full kits if you have a golf car garage. I bought mine at Ace, been about 3 or 4 years now and no problems, makes a big difference.
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