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Guide describing method for installing ducts in a duct chase above a dropped ceiling.

Guide for designing and installing interior ducts in an interstitial floor cavity in new and existing homes.

Guide describing how to air-seal duct and flue shafts.

Guide describing how to increase insulation in existing homes by installing batt insulation on the ceiling plane of a vented attic.

Guide describing how to correctly air-seal a wall with missing top plates or open wall cavities.