Builders Best 110244 Flexible Ducts Metalized Polyester Foil, 4" x 50&
Description
Highlights:
- UL 181, Class 1 air connector label for general venting
- Multi-ply design of metabolized polyester and aluminum/polyester laminate
- With 1" pitch Steel wire support
- Size: 4" x 50'
- UL sticker every 10 feet