Supply & Return Grilles

Upgrade airflow with durable supply grilles and return grilles for quiet comfort and a clean look. Budget-friendly choices for DIY and light commercial.

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Supply & Return Grilles

Keep air moving the right way with grilles that fit and finish your space. Choose Supply Grilles to distribute conditioned air, Return Air Filter Grilles to capture dust at the intake with a convenient hinged door, and Commercial Grilles for heavier-duty, high-traffic areas. Sizes cover common duct openings for quick replacements during renovations or repairs, helping reduce noise, improve comfort, and freshen the room’s appearance.

Ideal for homeowners, DIY-capable buyers, licensed contractors, and property managers, these grilles install with basic tools and a tape measure. Replace bent, rusty, or whistling covers and match styles across rooms with consistent louver patterns and finishes. Most selections fall between $17 and $50, delivering reliable performance without stretching the budget.

Unlike complete HVAC systems, SEER2, BTU/tonnage, and refrigerant specs do not apply to grilles. Instead, focus on the nominal duct opening (the size you order), overall face size, screw-hole pattern, finish, and blade style for airflow and sound. Our selection spans Supply Grilles, Return Air Filter Grilles, and Commercial Grilles so you can pick the right fit for residential or light commercial projects.

Top Brands for Supply & Return Grilles

Shop trusted names like Truaire and Crown for consistent sizing, durable steel or aluminum construction, smooth powder-coat finishes, and dependable performance across residential and light commercial jobs.

Frequently Asked Questions

  • How do I measure for the correct grille size (duct opening vs. face size)?

    Measure the inside duct opening (width x height). Order by that “nominal” size. The grille’s face/outside size will be larger to overlap the wall or ceiling.

  • What is the difference between a supply grille and a return air filter grille?

    A supply grille directs conditioned air into the room. A return air filter grille is a return cover with a hinged door that holds a standard filter to capture dust at the intake.

  • Are these grilles suitable for light commercial applications?

    Yes. Choose Commercial Grilles with heavier-gauge construction, larger sizes, and higher free area to support lobby, corridor, or office airflow needs.

  • Can I replace a grille myself and what tools are needed?

    Most swaps are DIY-friendly. Use a tape measure, screwdriver or drill, anchors if needed, and a utility knife to score paint. Turn the system off when working on returns.

  • Do grilles affect airflow and noise, and how should I choose the right style?

    Yes. More free area generally lowers resistance and noise. If you hear whistling, consider a larger size or a grille with more open louvers.

  • How do I choose between Crown and Truaire grilles?

    Both are reliable. Crown offers solid value and popular sizes; Truaire provides broad size ranges and finish options. Pick by size, style, finish, and budget.

  • Are filter grilles compatible with standard filter sizes?

    Most accept standard 1-inch filters. Match the grille’s nominal size to the filter size (for example, 16x20). Check depth clearance for the frame and door swing.

  • What finishes and screw patterns are common for replacement grilles?

    White powder-coat is most common, with select brown or aluminum options. Screw holes are typically at the corners; verify hole spacing before installation.

  • What’s the difference between a grille, register, and diffuser?

    A grille is a louvered cover, a register is a grille with a built-in damper, and a diffuser shapes ceiling supply air for even distribution.

  • How do I reduce whistling or drafts at a grille?

    Increase return size or choose a grille with higher free area, keep filters clean, seal duct leaks, and avoid overtightening screws that can distort the grille.

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