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  • The promotion will be automatically applied on the Shopping Cart page.
  • To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
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  • Free e-gift cards expire 03/01/27.
  • Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
  • Valid online and in participating retail stores.
  • Limited-time offer. Subject to change without notice.

Product Summary

The Tjernlund Duct Booster Fan is a versatile and powerful solution designed to enhance air circulation in hard-to-heat or cool areas. With an air delivery capacity of 1200 cubic feet per minute (cfm), this 14-inch fan effectively boosts airflow, ensuring consistent temperature control throughout your space. It can also be used as a utility blower for air supply or exhaust applications, making it a valuable addition to any HVAC system. Built with durability and reliability in mind, this fan is crafted in the USA, guaranteeing high-quality performance and long-lasting use. Whether you need to improve air distribution in residential, commercial, or industrial settings, the Tjernlund Duct Booster Fan delivers efficient and dependable results.

What's Included

    (1) Crawl space fan

Features + Benefits

  • Installs on inside or outside passive crawl space vent openings or mounts to floor joists
  • Includes paintable, heavy-duty galvanized steel mounting plate and freeze protection thermostat
  • Works with Tjernlund UnderAire™ crawl space ventilators, Items# 250744, 250745 and 250746 (sold separately)
  • 18in.W x 10in.D x 4in.H.

Key Specs

AttributeSpecification

item#

25768

Brand

Tjernlund

Manufacturer's Warranty

1 year limited warranty

Ship Weight

4.0 LB

Air Delivery

110 cfm
AttributeSpecification

Outdoor Rated

No

Volts

120

Watts

20

Speeds (qty.)

1

Warranty

Manufacturer's Warranty

1 year limited warranty

Extend Your Warranty Coverage with a Northern Protection Plan (NPP)

Replacement Plan — 1 Year

A Northern Protection Plan is available after adding the product to your shopping cart.