Underground mine and tunnel ventilation products

Duct Repair Solutions

Zipper Repair Sleeves


A quick fix repair solution for ducting with larger holes. Available in 36” & 60” lengths and are available in diameters ranging from 12” to 92” diameter.

Vent Plugs


Fast, simple way to plug holes in ducting that are 8” or less. Can be installed while fan is running to eliminate down time. Plugs come with 2 insertion rods on each so they can be used more than once.

Adhesive Repair Tape

The name says it all, peel and stick. For longer straight tears that need repair.