Blast Gate

thingiverse

This blast gate was designed by me when we installed ventilation in our workshop. One end is made to fit onto standard 100mm metal ducts with rubber seals, so the inside diameter measures 101mm. The other side has a 100mm outside diameter to accommodate normal 100mm hoses. I might add more diameters later on as special requirements come up. The design was intended to be modular from the start.