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Air Distribution

Air Distribution

Air Distribution – Engineered for Speed, Performance & Contractor-Ease

At EZ Plenum, we know every cubic foot of conditioned air is only as good as the pathway it travels. That’s why our Air Distribution catalog is built for serious performance in residential, commercial and light-industrial HVAC systems — and crafted with the speed and flexibility contractors demand.

What you’ll find:

  • Linear slot diffuser plenum boxes (12″ to 72″) — assembled and knocked-down versions for field flexibility. 
  • Insulated & uninsulated air distribution boxes (small to large) optimized for supply or return air plenums. 
  • Ceiling register boxes (6×6 to 14×14) and reducer boxes that simplify transitions from flex/rigid to diffusers without guess-work.
  • Full metal ducting fittings, tee‐pipes, collars and accessories so you can build the air pathway start-to-finish from one trusted vendor.

44 Products

Why choose our Air Distribution solutions?

Air distribution is rarely the flashy part of HVAC, but it’s absolutely critical for quiet, balanced, high-performing systems. Choosing the right plenum box, diffuser transition, and register box can make the difference between a call-back and a one-pass install. At EZ Plenum, we build what contractors need — so your next job becomes a refer-out, not a follow-up.

As a U.S.-based manufacturer, we build, stock, and ship directly, cutting lead times and ensuring consistent quality across every order. Whether you’re retrofitting an existing plenum, expanding a duct network, or fabricating new systems for a commercial project, EZ Plenum delivers parts that fit — the first time.