FAQs

What is a flush wall vent?

It's the cleanest-looking vent you can install. Instead of sitting on top of the wall, it gets mudded and taped directly into your drywall — so once it's finished, the flange (the frame around it) disappears and the vent sits perfectly flush with the wall. The trade-off for that seamless look is that it does require mudding and taping. If you'd rather have an easy DIY install with no mudding, our Framed Wall Vent mounts on top for a clean look without the drywall work.

Can I use it on both walls and ceilings?

Yes — every size works for both walls and ceilings, so you can keep a consistent, flush look throughout your space.

Why metal instead of plastic — isn't metal too heavy?

Not at all. We use a lightweight yet heavy-gauge metal that's far stronger than plastic without the added bulk, so it's easy to handle and install but built to take a beating. Metal is also fireproof and heat-safe — your furnace can blow hot air against it all day with no warping, melting, or fire risk like plastic vents can develop over time. And our pin-exact design locks the plate in with pins across all four corners, so it stays secure and will never fall out.

Does it have adjustable airflow?

Yes — all of our flush wall vent sizes come with included all-metal adjustable dampers, so you can fine-tune airflow on the 3x10, 4x10, 8x14.25, 10x30.25, and 14x14 (Exhaust Mount). The only exception is dedicated return vents, which are damper-free by design.

Can I paint it to match my wall?

Yes — it ships with a paint-ready finish. Paint it to match your wall or ceiling for a fully integrated, minimalist look, or even apply wallpaper over it for a seamless blend.

What sizes are available, and how do I measure?

We offer 3x10, 4x10, 8x14.25, 10x30.25, and 14x14 (Exhaust Mount). Measure the duct opening — not your old vent's faceplate — to pick the right size, and check the “Read Before Buying” measurement diagram on the product page. Not sure? Send us your measurements and we'll confirm.

What's your warranty and return policy?

Every vent is backed by a 2-year warranty from Khan Supply CO, a proudly Canadian-owned business. Returns are money-back within 30 days with prepaid return shipping. Orders on khansupply.co ship free, and we usually reply within minutes. Amazon orders are returned through Amazon.

Do you have a referral program?

Love our products? Refer us and get 5% of the order value as credit.

Drop-in floor vent supports all types of flooring — Khan Supply CO

The choice is yours

Whether it’s natural wood, luxury vinyl, or polished concrete, our vents are made to match your style today - and your upgrades tomorrow. Built from solid metal, they’ll continue performing long after your flooring has changed.

Free shipping and returns

Combine our undermount flush vents with our mud-in flush wall vents for a super seamless whole house upgrade.

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Black 4x10 drop-in flush metal floor vent shown at an angle — Khan Supply CO

Drop-In Floor Vent [Metal]

Sale price$29.69Regular price $34.99
Color
Color: Black
Size
Size: 4x10
Pack
Pack: 1 Pack
4.5
Black framed metal wall vent with a clean minimal frame — Khan Supply CO
Size
Size: 3x10
Pack
Pack: 1