Builder's Best 110129 4" x 6ft V830 Semi-Rigid Pipe
Ideal for dryer venting
4 in. diameter aluminum semi-rigid duct
Snap-Lock(TM) fittings on each end--1 collar crimped (male), 1 collar slotted (female)
Maximum velocity: 5,000 FPM
Operating temperature range: -100deg F to +430deg F
Bulk package