A metal range hood filter can look similar to another filter and still fail to fit. Before ordering a replacement, check the hood manufacturer and the marking stamped on the metal filter you have now.
This guide explains how to check FES-4001, listed for the metal filter marking C401W1BA. Rinnai Style's guide also lists it as an alternative type for a filter marked B401W1BA. The product listing says to check either the filter marking or hood model, and names ADR series models. For a change from B401W1BA to the alternative type, ask the seller to confirm fit instead of deciding from the listing alone.
Check whether cleaning is enough
If the filter is only greasy, first check the manual for your range hood to see how its filter can be cleaned. Panasonic's care guide says to turn off the power before cleaning and describes washing removable parts, including the filter, with a neutral kitchen detergent. Removal and cleaning methods vary by model.
If grease remains after cleaning or you cannot reinstall the filter correctly, do not force it into place. Check the manual or ask the manufacturer or a repair service. Weak airflow does not by itself prove that the filter is the cause.
Check the hood label and filter marking
Before searching for a replacement, check both:
- The range hood's manufacturer and model number. Rinnai Style says the model label may be on the underside or the inside of the left side of the hood.
- The marking on the metal filter. Turn off the power and follow the hood's manual when removing it. If you cannot read the marking, ask the manufacturer or seller using a photo and the hood model number.
Rinnai Style handles genuine metal filters for Fuji Kogyo hoods. Its marking guide lists C401W1BA / FES-4001 as an alternative type for B401W1BA. The FES-4001 listing names C401W1BA and ADR series hood models, and says to check either the filter marking or hood model. This describes the listing’s check; compare the listed information with the actual hood before deciding on fit.
Check FES-4001 using the listed information
If the existing filter is marked C401W1BA, the listing says to check either that marking or the hood model when identifying FES-4001. If you use the hood model, compare it with the listed ADR series. For a change from B401W1BA to the alternative type, Rinnai Style's guide names FES-4001, while the product listing names C401W1BA and ADR series models. If fit is unclear, give the seller the hood model and filter marking and ask before ordering.
Rinnai Style lists one steel filter measuring 40 cm wide × 27 cm deep × 0.9 cm high. The listed price was ¥5,390 including tax when checked. Price, stock, delivery time, and shipping can change, so check the current listing before ordering.
Check the FES-4001 marking, specifications, and sales terms (Rinnai Style Rakuten shop)
The listing tells buyers to check the filter marking or hood model before ordering, and says returns are not accepted if the manufacturer and model were not checked before purchase. Before ordering, check the hood manufacturer and model and compare them with the listing and filter marking. For the B401W1BA alternative or an unclear match, ask the seller before ordering.
For other markings, check the official list
For B401W1BA, Rinnai Style's list names C401W1BA / FES-4001 as an alternative type. For other markings, these sources establish neither fit nor incompatibility for FES-4001. Search the list for the exact marking and compare the hood model with the product information. If the match is unclear, ask the seller with the hood model number and a photo of the filter.
Do not assume a paper filter or a generic added filter is a safe substitute. Panasonic says not to use aftermarket filter covers with its range hoods. Models have different designs and requirements, so follow the manual and instructions for your own hood.
Sources and limits
I checked Rinnai Style's replacement-filter guide and FES-4001 listing, plus Panasonic's range hood care guide, on October 24, 2026. I have not checked the reader's hood manufacturer, model, filter marking, or installation result. The listed price was current only when checked; current price, stock, shipping, and delivery are not guaranteed. Do not buy if fit is unconfirmed.
