Galvanized Blast Gates These devices utilize a guillotine style blade to regulate airflow through a round pipe. They are used most often on dust collection systems. SKU 3BG Product Details | Specifications | Check Inventory Please select 3" BLAST GATE 4" BLAST GATE 5" BLAST GATE 6" BLAST GATE 7" BLAST GATE 8" BLAST GATE 9" BLAST GATE 10" BLAST GATE 12" BLAST GATE 14" BLAST GATE Log in to view price