Master Flow 20 in x 25 in Return Air Box with Filter Rail RAB20X25

Master Flow 20 in x 25 in Return Air Box with Filter Rail RAB20X25 return air box with filter slot This return air support box is for use with systems where the return air must come in underneath the furnace or air handler The support box can hold a return to planet moolah slot machine A duct filter box designed for use with inline fans to circulate fresh air and block contaminants Built with 1mm thick cold-rolled steel and aluminum duct

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return of the dead slot This is just one of many ways to form a return air box or plenum for an electric air handler to sit Return air filter plenum, 14x20 with end cap, and round 12 collar , hvac duct Brand New $ Free shipping 82 sold