3M™ Fire Barrier Plenum Wrap 5A+

3M™ Fire Barrier Plenum Wrap 5A+ is a fire-resistant wrap that consists of an inorganic fiber blanket encapsulated with a scrim-reinforced foil. Plenum wrap is designed as a strong, lightweight and flexible material for easy installation. This product is engineered to create a fire-resistive enclosure that can reduce flame and smoke spread ratings to acceptable levels in return air plenums.

Product Description

3M™ Fire Barrier Duct Wrap 5A+ (B40070030) is a flexible, high-temperature fire protection wrap for sheet metal ducts and return-air plenums in building systems. It’s non-flame supporting, low-smoke, and designed to maintain penetration integrity during a fire event.

Key Benefits

  • Fire Protection: Wraps sheet metal return-air plenums, rectangular ducts, fan intakes, and non-pressure duct systems.
  • Non-Flame Supporting & Low Smoke: Compliant with standards for fire and smoke emissions.
  • Flexible & Easy to Install: Flexible design allows wrapping around ductwork and penetration paths.
  • Retrofit Friendly: Suitable for both new installations and retrofit projects.

Best For

  • Return-air plenums
  • Rectangular & non-pressure ducts
  • Fan intake protection
  • Duct penetrations in fire-rated walls/floors
  • New and retrofit HVAC systems

Product Properties

Property Specification
Product Code (SKU) B40070030
UPC 00051115188022
Form Flexible fire-resistant duct wrap
Application Return-air plenums, rectangular ducts, fan intakes
Smoke & Flame Ratings Non-flame supporting; low-smoke emissions
Installation Wrap around ducts during new or retrofit construction
Use Cases Non-pressure HVAC systems, fire-rated penetrations