Which direction should blast gates be installed?

Blast gates are designed to air seal in one direction with the plate toward the collector - tightening the thumbscrew toward the collector will result in less air leakage. Use Blast Gate Adapters (4” long straight pipe crimped on one end) wherever Flex Hose will be used to connect the ductwork to a tool. (Fig. 6) We recommend Quick Release Band Clamps for connecting the hose to both the ductwork and the tool.

Additional information about Snap-Lock pipe installation can be found here.