A U.L-181 non-combustible,flexible metal duct,manufactured of corrugated aluminum with watertight lock seams. 10' lengths comes in compressed lengths with labor saving, universal male/female fittings.
CODE COMPLIANCE
Recommended Operating Pressure:
-12" w.g. pos./ neg. 6" - 10" dia.,
-8" w.g. pos./ neg. 12" - 18" dia., Maximum Velocity : 5,000 FMP Operating Temperature Range : - 73 deg. C to 221 deg. C Standard Length :10 Ft Standard Diameter :4" - 18"
