EZ Plenum 21"-Inch Large Triangle Air Distribution Box Knocked-Down R6 Fiberglass

This is a R6-rated fiberglass "knocked-down" 21"-inch large triangle air distribution terminal box. This triangular air distribution box is also referred to as a "tri-box" and is shipped "knocked-down", meaning it is prefabricated but requires assembling (tape is NOT included). The standard height of this triangle air distribution box when assembled is about 23"-inches high.

Outside Dimensions: 21"x21"x21"
Inside Dimensions: 18"x18"x18"
Height (outside dimension): 23"

Keep in mind, we also manufacturer these "assembled" for distributors and for those who rather have an assembled triangle distribution box. We have "assembled" versions listed on our website for sale.

This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here.

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All HVAC parts and equipment must be installed by a certified licensed professional to maintain the manufacturer warranty.

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