Duct Insulation
Duct insulation is flexible wrap material, typically fiberglass or reflective foil, used to insulate HVAC air ducts to prevent energy loss in heating and cooling systems.
Estimated value as of 2026 路 Source: https://www.walmart.com/c/kp/duct-insulation
Fun Fact
Fiberglass duct insulation as low as 39垄 per sq ft is available in bulk at home improvement stores like Home Depot, making DIY far cheaper than professional installation.
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