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Attic Protector R- 19 Fiberglass Blown-In Insulation with Sound Barrier 109-sq ft per bag ( 25.2-lb )

Johns Manville Attic Protector R- 19 Fiberglass Blown-In Insulation with Sound Barrier 109-sq ft per bag ( 25.2-lb )

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What is the difference between Pro R-19 and Protector #174? What would be the best application for each product? I wish to add insulation to existing


Hello, Thank you for your interest in Johns Manville's Attic Protector loose full fiber glass insulation. The Attic Protector #174 has a slightly higher coverage rate (approximately 5%) than the R-19 @ 103 square feet. Otherwise the two products have the same properties and performance. Best regards, Doug Fast

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