8.75in x 8.75in White Plastic 4-way grille with damper box MV4S 81904

SKU: 4946-81904-MV4S


Shipping calculated at checkout

Airtec 8.75" x 8.75" OD, Airtec 6X6 4way Grille/Damper/Box w/ 4,5,6" collar. MPN:81904 or MV4S.

A plastic ceiling diffuser with an incorporated ceiling box. For residential/light commercial use & offered in 8"x 8" square, 6x6" square, & 6" and 8" round. Designed for 1-man installation only working below the ceiling, they offer convenience & speed.


  • Stepped Collar for multiple duct sizes, Collar tabs easily tear away unneeded sections and Mounting Clip accommodates thicknesses up to 1-1/4"
  • Virtually air-tight butterfly damper Rubber gasket delivers superior seal when closed.
  • 8-3/4" x 8-3/4" Outside Dimension on Faceplate
  • Manufacturer's Part #: 81904
  • Damper Handle allows smooth, easy turning adjustment from below for fully open to the tightly closed position
  • High-Grade Polymer Grille resists breakage, scratching, yellowing and fading.
  • Patented one-piece grille, damper box, and Lightning-fast installation
  • Downloads:
  • Airtec Cutaway View
  • Airtec Spec Sheet.
  • Airtec Key Features & Benefits
  • Airtec Airflow
  • Airtec install instructions
  • Airtec 16 page brochure

Customer Reviews

Based on 2 reviews
Christian Talag (Wallington, US)

8.75" x 8.75" White Plastic 4-way grille/damper/box, MV4S, #81904

Rob L. (Whitman, US)
As Advertised

Exactly what I ordered. Shipped quickly.

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