Upgraded 2-in-1 drop-in metal floor vent installed flush in light hardwood flooring — Khan Supply CO

One vent, two options — leave open for custom flooring or drop in the included matte-black insert — Khan Supply CO

Size guide: 4x10 upgraded 2-in-1 drop-in vent — duct opening must be 4 by 10 inches, visible face 5.0 by 10.9 inches — Khan Supply CO

Upgraded 2-in-1 drop-in vent airflow diagram — highest airflow, zero vibration, no damper — Khan Supply CO

No flooring? No problem — removable metal insert included with the upgraded 2-in-1 drop-in vent — Khan Supply CO

Upgraded 2-in-1 drop-in vent installed in a dark stone-tiled washroom wall — Khan Supply CO

Khan Supply CO 100% metal vent versus a cracked plastic register — walkable, heat resistant, no fire hazard

Proudly Canadian owned, 2-year warranty — upgraded 2-in-1 drop-in metal floor vent by Khan Supply CO

Upgraded 2-in-1 Drop In Vent with Insert

Q: What size do I need, and how do I measure?

Measure the duct opening in the floor, not your old vent's faceplate. The size refers to the hole it fits (a 4x10 fits a 4 in × 10 in opening). We offer 3x10, 4x10, and 4x12. Not sure? Send us your measurements and we'll confirm.Full measurements and diagrams are in the Drop-In Floor Vent Size Guide.

Q: How much airflow do these provide, and are they noisy?

Our raised, damper-free plate delivers up to 60% more airflow than comparable flush vents and runs quieter: no louvres or moving parts means no rattle. They're non-adjustable by design, which is what maximizes airflow.

Q: 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 (90 if unopened) with prepaid return shipping. Orders on khansupply.co ship free, and we usually reply within minutes. Amazon orders are returned through Amazon.

$37.99

Insert Included

No Flooring Required

Easy Install

Tool Free

Fully Metal

Powder Coated

Size: 4x10

Measure your DUCT OPENING: the hole in the floor, not the metal faceplate.Your opening must fit within the range shown for the size you pick. Replacing a vent or cutting into new flooring? Measure and match the duct opening.

3 × 10

Duct openingmust fit within this range2¾–3¼″ × 9¾–10¼″

Insert cutoutsize of the middle insert1.61″ × 8.35″41 × 212 mm

Faceplatevisible face4.0″ × 10.9″

4 × 10

Duct openingmust fit within this range3¾–4¼″ × 9¾–10¼″

Insert cutoutsize of the middle insert2.56″ × 8.35″65 × 212 mm

Faceplatevisible face5.0″ × 10.9″

4 × 12

Duct openingmust fit within this range3¾–4¼″ × 11¾–12¼″

Insert cutoutsize of the middle insert2.48″ × 10.31″63 × 262 mm

Faceplatevisible face5.0″ × 12.9″

Size	Duct openingMust fit within this range	Insert cutoutSize of the middle insert	FaceplateVisible face
3 × 10	2¾–3¼″ × 9¾–10¼″	1.61″ × 8.35″41 × 212 mm	4.0″ × 10.9″
4 × 10	3¾–4¼″ × 9¾–10¼″	2.56″ × 8.35″65 × 212 mm	5.0″ × 10.9″
4 × 12	3¾–4¼″ × 11¾–12¼″	2.48″ × 10.31″63 × 262 mm	5.0″ × 12.9″

How to measure

Replacing a vent?Pull the old one out and measure the bare duct opening. Match it to the duct opening range.

New install or new flooring?Cut the wood / subfloor to the DUCT OPENING, then drop the vent in. It seats flush.

Works with flooring up to 21 mm (~13/16 in) thick. Thinner flooring? Add a wood or drywall sub-insert underneath to bring the vent flush.

Faceplate is the visible metal face that sits on your floor. It is larger than the hole by design.

Don’t see your size?

4x10
3x10
4x12

14.8 sq in free areaDetails →

Pack: 1

1
5
4

Product variants

In stock, ready to ship

Arrives in 2–4 days Free express shipping

Free prepaid returns, 30 days (90 unopened)

Buying for a job? Trade pricing for builders, contractors and designers. Apply for a trade account

Airflow & free area: 4x10

Free area: 14.8 sq in
Open area: 37% of nominal
Air flow at 500 fpm: ≈ 51 CFM

Air flow by face velocity (fpm → CFM)
400	500	600	800	1000
41	51	62	82	103

Same size, other models

Computed from production drawings (free area × face velocity). Not lab-tested; ASHRAE 70 testing pending. Delivered airflow depends on your blower, duct run and damper position. How we measure →

Airflow & free area: 3x10

Free area: 13.2 sq in
Open area: 44% of nominal
Air flow at 500 fpm: ≈ 46 CFM

Air flow by face velocity (fpm → CFM)
400	500	600	800	1000
37	46	55	73	92

Same size, other models

Computed from production drawings (free area × face velocity). Not lab-tested; ASHRAE 70 testing pending. Delivered airflow depends on your blower, duct run and damper position. How we measure →

Airflow & free area: 4x12

Free area: 17.5 sq in
Open area: 37% of nominal
Air flow at 500 fpm: ≈ 61 CFM

Air flow by face velocity (fpm → CFM)
400	500	600	800	1000
49	61	73	97	122

Same size, other models

Computed from production drawings (free area × face velocity). Not lab-tested; ASHRAE 70 testing pending. Delivered airflow depends on your blower, duct run and damper position. How we measure →

Our Best-Selling Floor Vent, Now With An Included Insert

100% Metal, No Plastic • 2-Year Warranty • Proudly Canadian Owned

2-IN-1 READY-TO-INSTALL: No flooring? No problem: includes a matching matte black metal insert, so there is no flooring to cut. Removable later if you want to add custom flooring.
UP TO 60% MORE AIRFLOW: vs. comparable flush vents, thanks to the unique click-in, raised plate design.
FLUSH-MOUNT DESIGN: Sits level with your flooring for a sleek, seamless appearance.
HEAVY-GAUGE METAL: Built to last, this vent features heavy-gauge metal for long-lasting resilience.
TOOL-FREE INSTALL: No screws needed. Click-in, compression-fit frame locks into the duct opening.
DAMPER-FREE FLOW: Non-adjustable, louver-less design prevents rattle and boosts airflow.

Insert size: 3x10: 1.61″ × 8.35″ (41 × 212 mm) | 4x10: 2.56″ × 8.35″ (65 × 212 mm) | 4x12: 2.48″ × 10.31″ (63 × 262 mm)

Don't need the included insert, or want spares for the rest of your vents?

Drop-In Vents Vent Inserts Only

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Free express shipping

Free prepaid returns, 30 days (90 unopened)

2-Year Warranty

Proudly Canadian Owned

Clean Water for Orphans

Upgraded 2-in-1 Drop In Vent with Insert

4x10 / 1

$37.99

FAQs

What's the difference between the regular and the upgraded Drop-In vents?

The upgraded vent comes with a matching insert that pops in and out easily. If you don't have any spare flooring, or just want to change up your design between seasons, you can do it in seconds with the all-metal, matte black matching insert. Everything else (heavy-gauge metal build, tool-free fit, and high airflow) is the same as our standard Drop-In vent.

What types of flooring can I use with it?

It ships ready to install with the included insert, but if you'd rather use your own flooring, it supports all types (laminate, LVP, vinyl, hardwood, engineered hardwood, tile, ceramic, porcelain, cork, bamboo, and carpet) up to about 20 mm (¾ inch) thick.

My flooring is thinner than the vent tray. How do I get it to sit flush?

Just build up the base under your insert piece (thin plywood, underlayment, or spacers) until the flooring you drop in sits level with the surrounding floor. This lets you match almost any floor height for a seamless look.

What size do I need, and how do I measure?

Measure the duct opening in the floor, not your old vent's faceplate. The size refers to the hole it fits (a 4x10 fits a 4 in × 10 in opening). We offer 3x10, 4x10, and 4x12. Not sure? Send us your measurements and we'll confirm.

Full measurements and diagrams are in the Drop-In Floor Vent Size Guide.

How does installation work? Do I need tools?

No tools, screws, or drilling. Our compression-fit frame fits securely into the duct opening and sits level with your floor. Press to seat it, lift it out for cleaning. There's a short install video on the product page.

How much airflow do these provide, and are they noisy?

Our raised, damper-free plate delivers up to 60% more airflow than comparable flush vents and runs quieter: no louvres or moving parts means no rattle. They're non-adjustable by design, which is what maximizes airflow.

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 (90 if unopened) 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.

2-Year Warranty

Fully Metal

High Airflow

Power Coated Steel

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

Upgraded 2-in-1 Drop In Vent with Insert

Our Best-Selling Floor Vent, Now With An Included Insert

Reviews

FAQs

2-Year Warranty

Fully Metal

High Airflow

Power Coated Steel

The choice is yours

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