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7 results found that include 70 products

Come to Grainger for HVAC diffusers that disperse the airflow from ductwork. Use a round diffuser with overlapping stepdown rings with a butterfly damper. A square diffuser provides high volume air diffusion; multi-louver models control air volume. Perforated diffusers feature a clean, unbroken plane look and reduce noise in low volume air applications. Choose the type and size that fits your ductwork. Shop a wide selection of HVAC diffusers at Grainger today.Close

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  • Square Ceiling Diffusers
    • Multiple product options available

      These square ceiling diffusers are designed to help provide high-volume air diffusion. They feature directional diffusers on 4 sides, to provide 360° horizontal air flow control even at low air volumes, making them a good choice for VAV applications. They are ideal for use in T-bar, lay-in, or surface-mount applications.

      Multiple product options available

  • Diffuser,Egg Crate,Duct Size 22 x 22"
    Square Egg Crate Diffuser
    • TM

      Grainger Choice

    • GRAINGER APPROVED
    • These square egg-crate diffusers are designed to help provide high-volume air diffusion. They feature washable, reusable filters.

    • Item # 4MJW6
    • Mfr. Model # 4MJW6
    • Egg Crate Diffuser, Egg Crate Diffuser, Diffuser Shape Square, Diffuser Face Type Perforated, Diffuser Duct...More

  • Square Perforated Diffusers
    • TM

      Grainger Choice

    • GRAINGER APPROVED
    • Multiple product options available

      These square, perforated diffusers are designed to help provide high-volume air diffusion. They offer a clean, unbroken-plane look and can help to reduce noise in low-volume air applications.

      Multiple product options available

  • Round Ceiling Diffusers
    • TM

      Grainger Choice

    • Multiple product options available

      These round ceiling diffusers feature overlapping step-down rings, and are compatible with butterfly dampers.

      Multiple product options available

  • Risk Resistant Ceiling Diffuser
    • PRICE
    • Multiple product options available

      Each of these risk-resistant ceiling diffusers features an injury-inhibiting core with a W-shaped blade. They are designed to impede efforts to threading while providing effective air distribution in a variety of blower patterns. Models with a powder-coated finish also help to resist corrosion.

      Multiple product options available

  • Rectangular Flush Mount Ceiling Diffusers
    • PRICE
    • Multiple product options available

      Each of these rectangular, flush-mount ceiling diffusers features a white, powder-coated finish to resist corrosion. They are designed to help provide a radial flow pattern with a flush-mounted perforated diffuser face that does not drop below the ceiling. Units come with an easily replaceable, high-efficiency filter with gel seal.

      Multiple product options available

  • Square Flush Mount Ceiling Diffusers
    • PRICE
    • Multiple product options available

      These square, flush-mount ceiling diffusers are designed to help provide a radial flow pattern from ceiling vents. The flush-mount perforated diffuser faces do not drop below the ceiling. Each unit comes with an easily replaceable, high-efficiency filter with gel seal. The white, powder-coated finish helps to prevent corrosion.

      Multiple product options available

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