This ducting adaptor is designed to be fixed on to the warm air outlet on a Master BV77 indirect oil fired space heater.
It allows ducting to be attached on to the heater, so that the clean warm air produced by the heater can be directed into various spaces, including marquees, workshops, construction sites and more, in order to heat the space effectively and safely.
The 310mm outlet allows lengths of 310mm diameter flexible ducting to be attached to the heater.