Quick view Add to Wishlist US DUCT INC US Duct Clamp Together Automatic Blast Gate 6"" Diameter 304 Stianless Steel p/n RACO06.SS US DUCT'S AUTOMATIC BLAST GATES ARE PNEUMATICALLY OPERATED AND ELECTRICALLY CONTROLLED. THE PNEUMATIC CYLINDERS REQUIRE 90 PSI TO OPERATE BUT USE VERY LITTLE VOLUME. AN ELECTRIC SOLENOID DIRECTS THE FLOW OF THE AIR TO THE CYLINDER FOR OPENING AND... MSRP: $1,411.99 Add to Cart The item has been added Compare