We have them. Love them. They help stop sound transfer. THEY ARE NOT GAS FILLED, So no worry about blown seals. We do not get the condensation on the windows in the mornings or when its cold out and it only adds about 200 pounds to the weight. We think there worth the money.
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2017, 3500 Ram Big Horn, 4x4, Crew Cab, DRW, Aisin Transmission, 4:10. Curt Q20, 2014 Mountaineer 331 RLT, Sailun's on the rv and truck.
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