Both tests are necessary to avert flammable grease from both catching fire when it passes as a result of an adjacent area or, In the event the grease by itself is by now alight, producing a fire to get started on within the adjacent region by radiant warmth. Suited to https://greasetightextractductwor45667.newbigblog.com/43379438/grease-tight-extract-ductwork-no-further-a-mystery