Radiant Barrier Bubble Wrap R4.2 (R6 w/ spacer) for Duct Insulation

48 x 125' roll, R4.2 without spacer, R6 with spacer installed on the exterior of ductwork, RFoil Bubble Wrap is two layers of polyethylene bubbles

Reflectix R-21 Attic Wall Unfaced Reflective Roll Insulation 400

3M Fire Barrier Plenum Wrap 5A+ — Express Insulation

Reflectix still claiming R4.2 for its bubble wrap - my HVAC guy is

Products — Page 2 — Express Insulation

3/8” Staples (to fit P6-6 plier gun), Duct Wrap Staples — Express Insulation

Fiberglass Duct Board FSK Faced (Foil) — Express Insulation

Duct Insulation Spacers

Radiant Barrier Bubble Wrap R4.2 (R6 w/ spacer) for Duct Insulation — Express Insulation

rFOIL Reflective Insulation and Radiant Barriers - Safe, Clean