Builders Best 110825 Wmf621 Foil Duct UL181 (3 inches x 25 feet)

Product Description

Builders Best 110825 is a WMF621 wire-helix foil duct for HVAC systems, rated for low to medium operating pressures and listed to UL 181 as a Class 1 air connector. The duct features an encapsulated steel wire helix, multi-ply aluminum/polyester laminate construction, and a smooth inner core for air-tight runs. It is intended for HVAC air distribution and is not for venting cooking, heating, or clothes-drying appliances unless approved by the appliance manufacturer.

• UL 181 Class 1 air connector label with UL sticker every 10 feet
• Encapsulated steel wire helix with tear- and puncture-resistant multi-ply construction
• Air-tight design with smooth inner core and steel wire support; maximum velocity rating 5000 fpm

Product Highlights

25-foot, 3-inch diameter UL181-listed wire-helix foil duct for low to medium pressure HVAC air distribution

Product Information

Standard Information

• Brand: BUILDERS BEST
• Manufacturer Part Number: 110825

Technical Specifications

• Brand: Builders Best
• MPN: 110825
• Model: WMF621
• Length: 25 ft (300 in)
• Diameter: 3 in
• Listing / Label: UL 181 Class 1 air connector; UL sticker every 10 ft
• Construction: Encapsulated steel wire helix; multi-ply aluminum/polyester laminate; metalized polyester; smooth inner core
• Helix Pitch: 3/4 in (pitch) for 3 in diameter (manufacturer-stated)
• Maximum Velocity Rating: 5000 fpm
• Intended Use: HVAC air distribution for low to medium operating pressures (not for venting appliances unless approved by appliance manufacturer)
• Limitations: Not for use to vent cooking, heating, or clothes-drying appliances unless appliance manufacturer approves
• UPC: 722048108257
• Packaging: Bag
• Performance Level: PRO