UL 181A Imprinted Foil Tape – 181A Series – 4.8 mil

UL 181A-P & B-FX Listed Premium Cold Weather Foil Tape for HVAC

Superior performance in all climate conditions – Ideal for sealing fiberglass duct board, dryer ventilation sealing, metal-to-metal seaming for duct systems

Broad Temperature Range: -20°F to 325°F


Our 181A Series Imprinted Foil Tape is a 2 mil (50 micron) heavy duty, high strength aluminum foil coated with a specially formulated pressure sensitive acrylic adhesive system. Superior adhesion and conformance for use with fiberglass duct board systems. Performance and materials guaranteed to meet or exceed UL-181A-P and UL-181B-FX quality standards and assures against tape being a conductor of any flame.

Features & Benefits

  • Aggressive Cold Weather Acrylic Adhesive – Suitable in all weather conditions – Resists mold/mildew
  • UL 181A-P & B-FX Listed – Meets code requirements and can contribute toward requirements for EA Credit 1 (Optimize Energy Performance) under LEED.
  • Low VOC Count – Can contribute toward satisfying EQ Credit 4.1 (Low Emitting Materials) under LEED
  • Ideal for permanently sealing fiberglass duct board, flexible ducts for HVAC systems, dryer vent sealing and sealing metal-to-metal seams on rigid sheet metal ducts
Item # Roll Size Units / Case Case Size Case Weight
500525 2.5″ (60mm) x 60 yd 16 – Cello 12.25″ x 12.25″ x 10.75″ 38 lbs


Technical & Consumer Data

Physical Properties

Total Thickness: 4 mil
Adhesion: 61 oz/in
Shear: 5 lb. Weight 24 hours + 40°F / 6 hours –  10 lb. Weight > 120 hours + 73.4°F / 120 hours – 1 lb. Weight > 6 hours + 150°F / 6 hours
Flame Spread Rate: 25
Tensile Strength: 32 lbs/in

Physical characteristics shown are averages from tests recommended by our own procedures. A particular roll may vary slightly from these averages. The buyer should determine the suitability for his own use.


Technical Data Sheet

Safety Data Sheet

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