RS Components
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Fan Filter, Fan Mounted 40 x 40mm, for 40mm Fan PUR

1500 In stock - FREE next working day delivery available
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Price Each (In a Pack of 10)


(exc. VAT)


(inc. VAT)



RS Stock No.:
COO (Country of Origin):
UnitsPer unitPer Pack*
10 - 90£1.684£16.84
100 - 240£1.502£15.02
250 - 490£1.457£14.57
500 - 990£1.415£14.15
1000 +£1.373£13.73
*price indicative

Fan Filter Kits

Filter kits comprise of a guard which attaches to the fan, a retainer which snap fits onto the guard and the replaceable filter media in 30 ppi or 45 ppi.

737-4074 - 45 ppi

737-4052 - 30 ppi

*This product is undergoing a branding transition so you may receive dual branding products. Both versions are exactly the same and work to the same spec*

The dust has many definitions, but we can describe it as a dry powder consisting of little particles, which quite often irritates an eye and can-do harm to your appliances. To lifespan, your application and increase comfort and safety, we are recommending using Fan Filters. They intend it is to remove any dust or small particles from the airflow of the Fan. It helps with the free movement of air and protects the Fan from any internal damage. The Fan Filter Unit (FFU) knows as Dust Filter is an accessory that is used in fans and blowers by many users worldwide. The typical Filter consists of four parts, such as the outer cover or frame, filter pad, mesh screen and finger guard. The Fan Filters are available in various shapes, styles and materials. The selection of a Fan depends on the size and type of Fan and environment. Some of the attributes, such as frame size, frame material, filter type or filter material analysis, should take place. Fans and Filters have their well-established position in almost every industry where the temperature is developing, and the machinery or components around it must be kept cold. From Motors, CNC and welding machines, office equipment to Laboratories where clean air is essential. We are proudly introducing our own branded RS PRO Fan Filter Kits that comprise of a guard, which attaches to the Fan and a retainer snap-fits onto the guard with replaceable filter media in 30 PPI or 45 PPI. The higher the PPI number, the more dense and lower flow is. Most Fans have a PPI rating of 30 or 45 and are famous for most Fan applications. The PPI filtration comes as polyurethane foam and is UL (Underwriters Laboratory) tested, which means representative samples of the product met institution requirements. The rating of this Filter Fan conforms to UL94V-0 meaning the foam has passed UL testes against fire safety and is ready to go for specific applications. The great advantage of the Dust Filter is the snap-in retainer making cleaning quick and relatively easy with no tools required. Fan Filet is also responsible for low resistance, filtration or matter and noise reduction. These precision Fan speed controllers are must-have vent cooling systems that will make a difference during your busy day.

Features and Benefits

  • Plastic - reinforced ABS (Acrylonitrile Butadiene Styrene) is a well-known polymer used across the industry

  • UL tested and approved

  • Rating of UL94V-0 provide clear and transparent notification against fire safety for foam Fans

  • 30 PPI (RS stock number 737-4052) or 45 PPI (RS stock number 737-4074) are the most popular Fan Filters

  • The Extractor Fan Filter characterises of low air resistance and noise reduction

  • Dust Filter dimensions are L 40 x W 40 mm

  • The foam Filter is cleanable but not washable


The most common uses are:

  • Electrical control cabinets

  • Motors

  • Data cabinets

  • Laboratories

  • CNC and welding machines

  • Office equipment (projectors, laptops etc.)

  • Server racks


RS Pro is our family brand and brings you a wide range of high-quality and high-value products to support your project. Trusted by engineers all over the world, every part of every RS PRO product is always rigorously tested against demanding industry standards. We are only giving the RS PRO seal of approval if we're confident of their exceptional quality, which means you can be convinced too.

Filter TypeFan Mounted Filter
Fan Size40mm
Dimensions40 x 40mm
Frame MaterialABS
Filter MaterialPUR