EZ Plenum EZLP72X4 Assembled Fiberglass Linear Plenum Box fits 72"-Inch 2-Slot Diffuser

This is a R6-rated fiberglass "assembled" linear plenum box that fits a 72"-inch 2-slot (1"-inch slot width) linear diffuser grille. The standard height of our linear plenum boxes are about 12"-inches high. This plenum box is manufactured to fit most 2-slot (1"-inch slot width) linear grilles, however, there are exceptions... therefore please see product specifications below for duct opening size and overall dimensions to confirm it will fit your brand grille/diffuser (if you need something custom-built to fit, share your grille manufacturer submittal sheet with us). Keep in mind, we also manufacturer these "knocked-down" for distributors who wish to save space for warehousing and for those who rather build the prefabricated plenum box and use the can stock flanges out. We have "knocked-down" versions listed on our website for sale.