Cut to Fit Activated Carbon Filter Sheet 16x48" - Universal Air Purifier Charcoal Filter Roll for HVAC, AC, Window, Range Hood by LifeSupplyUSA

This is a flat sheet of activated carbon filter material, 15.98 x 48.03 inches and 0.2 inches thick. You cut it to whatever size you need. The listing names air purifiers, HVAC, AC units, window units and range hoods as uses. It's a generic product, not made by your hood's manufacturer.

Why it matters for cooking smells

If your range hood doesn't vent outside, it recirculates. It pulls air through a grease filter and then a carbon filter and blows it back into the kitchen. The carbon is the only part that does anything about smell. Once it's saturated, the hood still makes noise and moves air, but the smell comes straight back out.

Plenty of people have never changed theirs. If your hood runs but the kitchen still smells, a spent carbon filter is one of the first things to check. Our range hood troubleshooting guide goes through the other causes too.

Fitting it

Measure the existing carbon filter or the slot it sits in, cut the sheet to match, and fit it behind the grease filter. No tools are needed beyond scissors. One 16x48 sheet will cover several hood-sized pieces, so you get spares from a single purchase.

LifeSupplyUSA suggests replacing it every six months, depending on air quality and use. A kitchen with daily frying will need it sooner than one that mostly sees reheating.

Who should skip it

If your hood vents outside, it usually has no carbon filter, and this won't help. Make sure the duct and damper are clear instead.

Some hoods take a molded carbon cartridge rather than a flat pad. A cut sheet won't seat properly in those, so buy the manufacturer's part. And don't expect it to change what kind of hood you have. A fresh filter makes a recirculating hood work as designed, which is still less effective than venting outside.

How it compares

• Manufacturer-branded filter: guaranteed to fit, usually costs more per change. If the slot is a simple frame that takes a flat pad, the cut-to-fit sheet does the same basic job.
• Levoit Core 300S-P air purifier: a HEPA and carbon purifier treats the room the smell spreads into, not the hood. It costs a lot more, and it makes sense once the hood is working and the smell still reaches the living area.

It has 4.6 stars from about 195 Amazon reviews. For the full order of fixes, start with our main cooking smells guide, and see why your house smells after cooking for the background.