B-Line Eaton series filter fan...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,133.10
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B-Line Eaton series filter fan, 1, Includes high airflow with low noise operations, Steel, 1 box fan, Versatile mounting

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Model: KP40

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,133.10
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Eaton B-Line series filter fan, NEMA 1, Includes high airflow with low noise operations, Steel, NEMA 1 box fan, Versatile mounting

Manufacturer Resources

Product Specs

Application:
Includes high airflow with low noise operations
Certifications:
UL Listed
Degree Of Protection:
NEMA 1
Product Category:
Filter fans
Product Height:
6.13 in
Product Length Depth:
5.62 in
Product Weight:
3 lb
Product Width:
7.38 in
Department:
Electrical
Product Group:
Racks & Frames
Product Subgroup:
Frames
Product Type:
Frames & fasteners
Product Details:
Frames & fasteners
Product Style:
NEMA 1 box fan
Product Material:
Steel

B-LINE KP40 – Frequently Asked Questions

1) What size cutout or space do I need for the Eaton B-Line KP40 filter fan?
The KP40 filter fan measures 7.38 x 6.13 x 5.62 inches (width, height, length/depth). Plan the enclosure wall area and internal clearance around those figures before you cut. It weighs 3 lb, so a sheet-steel enclosure panel carries it without extra bracing.
2) Can the B-Line KP40 filter fan be used on an outdoor or washdown enclosure?
No. The KP40 is a NEMA 1 box fan, which is indoor general-purpose only, offering no protection against rain, hose-down or dust ingress. For an outdoor or wet-location cabinet you need a fan and filter kit rated NEMA 3R, 4 or 12 to match the enclosure rating, otherwise you void the enclosure's rating at the cutout.
3) Is the Eaton B-Line KP40 filter fan UL Listed for use in an electrical enclosure?
Yes, the KP40 is UL Listed. That is the line an institutional or MRO spec usually asks for when a cooling fan is added to a control or network enclosure.
4) Can the B-Line KP40 fan be mounted on the side of an enclosure instead of the door?
The KP40 is a versatile-mounting box fan, so it is not restricted to one panel. The usual practice is to mount it low as the intake and vent high on the opposite side so air sweeps across the equipment rather than short-cycling.
5) Do I need to order anything else to finish a KP40 fan install, like an exhaust grille?
A filter fan only pushes air in; it needs a matching exhaust filter grille on the opposite side of the enclosure to let the air back out, plus the cutout and fasteners for the panel. The KP40 ships as a single NEMA 1 box fan, so the outlet grille and any thermostat control are separate items.
6) What is the exact part number to order this Eaton B-Line filter fan?
Order it as Eaton B-Line KP40. That is the single model offered, so there are no finish or voltage suffixes to add to the number.
7) Is the KP40 housing plastic or metal?
Steel. That matters if the cabinet is in a plant or shop environment where a plastic fan shroud would get knocked about, and it lets the fan be painted or grounded with the rest of the enclosure.
8) Will a filter fan like this be too loud for an office or a server closet?
The KP40 is built for high airflow with low noise operation, so it is intended for spaces where fan noise is a concern, such as a network or control cabinet inside occupied space. No decibel figure is part of the fan's published specification, so if you are working to a hard noise limit, size on airflow and mounting location.
How fast can I get the B-LINE KP40 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the B-LINE KP40 come with a warranty?
Absolutely. The B-LINE KP40 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the B-LINE KP40?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the B-LINE KP40 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.