REAR MAKEUP-AIR PLENUM Rear Make-Up Air Plenum: Air delivered through the front of the rear plenum (BR-back return) creates a positive pressure barrier behind the cooking equipment to keep smoke and grease laden vapors moving upward toward the hood. This plenum can be used with an Exhaust only hood. It is installed on the wall.
This red velvet rope was never used but has been stored in my smoke free/pet free home for a few years - so I guess it is technically not new but it hasn't been used so I didn't want to state used...
THIS AUCTION Is for this 3M™ Fire Barrier Moldable Putty Pads MPP+, 4 in x 8 in, 10/pack you see pictured above. A one-part, ready-to-use, re-enterable, intumescent putty that can be easily formed to firestop wall-openings and through penetrations in fire-rated assemblies.
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