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The evolution of air diffusion.


MV Classic Air Diffusers
The one-piece grille, damper, box. Quickest install in the trade.

MV Retro Air Diffusers
One-piece grille, damper, box. The look and feel of a traditional antique cast iron grille.

Limited Clearance Diffusers
Grille/damper for side or top entry to conventional sheet metal box.

TuffBox Register Boxes
Tough rough-in polymer register boxes for HVAC systems. Strong. Silent.