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Check out 2J University's NEW 101 classes; HVAC 101 for entry level techs and HVAC Business 101 for experienced contractors interested in mastering the business side of the profession.

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fr2 14x20x1 - *filter rack open on short side 14 x 20 x 1
fr2 14x25x1 - *filter rack open on short side 14 x 25 x 1
fr2 16x25x1 - *filter rack open on short side 16 x 25 x 1
box 19 w/filter rack - 19 inch box with built in filter rack 18x20x1
box 22 w/filter rack - 22 inch box with built in filter rack 20x24x1
box a - box 14-1/4wx28dx22t insulated w/botm
box 14 - box 14-in w x 22-in l x 20-in h 24ga.
box 16 - box 16-in w x 22-in l x 20-in h 24ga.
box b - box 17.5wx28dx22t insulated w/bottom
fr2 14x20x1 - *filter rack open on short side 14 x 20 x 1
fr2 14x25x1 - *filter rack open on short side 14 x 25 x 1
fr2 16x25x1 - *filter rack open on short side 16 x 25 x 1
box 19 w/filter rack - 19 inch box with built in filter rack 18x20x1
box 22 w/filter rack - 22 inch box with built in filter rack 20x24x1
box a - box 14-1/4wx28dx22t insulated w/botm
box 14 - box 14-in w x 22-in l x 20-in h 24ga.
box 16 - box 16-in w x 22-in l x 20-in h 24ga.
box b - box 17.5wx28dx22t insulated w/bottom