atack aluminum foil reflective duct tape, 3.6 mil, 2 inches x 55 yards high temp and heavy duty metal aluminum hvac tape for duct work, furnace, ac units and metalworks - Walmart.com
Nashua 360-45 Heavy Duty FoilMastic Butyl Rubber Tape
HVAC Foil Tape at Lowes.com
Duct tape - Wikipedia
INTERTAPE #AC-35 2" X 60YARD GRAY DUCT TAPE IN CASE OF 24 ROLLS