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  1. HVAC Diffusers - Grainger Industrial Supply

    HVAC diffusers install onto the ends of ducts and help spread conditioned air throughout a room. Some diffusers feature vents that create smooth airflow that travels along walls and ceilings …

  2. Grilles, Registers & Diffusers - Grainger Industrial Supply

    Grilles, registers, and diffusers connect to the ventilation system inside a building and create a termination point for ventilation ducts.

  3. HVAC Grille, Register & Diffuser Accessories - Grainger

    Accessories for grilles, registers, and diffusers replace damaged or worn parts, help with installation, or add new functionality to existing components. Note: Product availability is real …

  4. Ceiling, 23 3/4 in H, Diffuser - 4MJV3|4MJV3 - Grainger

    Square cone diffusers distribute conditioned air by forcing it through an array of narrow vents. As the air passes through these openings, it is focused and projects further into the interior space.

  5. HVAC Registers - Grainger Industrial Supply

    Registers install onto the ends of ducts and provide a protective cover with an integrated damper. This damper directs or completely stops the airflow into the conditioned space.

  6. Ceiling/Wall, 14 in Dia, Diffuser - 4JRL1|4JRL1 - Grainger

    Round cone diffusers connect to exposed or recessed round ducts and spread conditioned air throughout a room more efficiently than standard grilles or registers. They feature a series of …

  7. Ceiling, 23 3/4 in H, Diffuser - 54ZF43|STR-C-W-NRD - Grainger

    Square cone diffusers distribute conditioned air by forcing it through an array of narrow vents. As the air passes through these openings, it is focused and projects further into the interior space.

  8. Ceiling, 24 in Dia, Diffuser - 46V222|SPD-GR000039 - Grainger

    Square plaque diffusers spread conditioned air through an interior space by channeling it through a narrow opening around their perimeters. Compared to a cone or perforated diffuser, they …

  9. Ceiling, 23 in H, Diffuser - 36N453|SDIG77510 - Grainger

    Square louvered diffusers with filters spread conditioned air throughout interior spaces. They feature louvered vents along all four outer edges that distribute the conditioned air further into …

  10. Ceiling/Wall, 11 in H, Diffuser - 4MJJ3|4MJJ3 - Grainger

    Square louvered diffusers combine the air-spreading vents of cone diffusers with the adjustability of a louvered air register. They can direct air in several directions simultaneously and allow for …