Modular Crawl Space Exhaust Fan System - 1,115 CFM Portable with Duct and Vent

SKU: CSF-MFS-E

9 low in stock

$475.00

Estimated standard delivery between January 06 and January 09. Order within . Upgrade for faster delivery at checkout.

  • Maximum Airflow: 1,115 CFM (high speed)
  • Medium Speed: 822 CFM
  • Low Speed: 529 CFM
  • Fan Size: 12 inches
  • Duct Size: 10-inch double-walled flex
  • Foundation Vent: 8" × 16" with 95 NFA
  • Height When Assembled: 22 inches
  • Frame Material: Durable corrosion-resistant ABS plastic
  • Motor: Totally enclosed, energy efficient
  • Power: 115 Volts, 0.88 Amps
  • Cord Length: 9 feet
  • Speed Control: Three-speed controller included
  • Safety: OSHA approved protective grill
  • 12-inch three-speed portable fan (1,115/822/529 CFM)
  • Modular frame and base (separates for crawl space entry)
  • 10-inch double-walled flex duct
  • 8" × 16" foundation air vent with 95 NFA
  • Duct connectors
  • 9-foot power cord
  • OSHA-approved blade guard
  • Three-speed controller

We want you to be happy with your product!

Within 30 days of your order, we offer a 100% refund if a product was faulty, defective, or damaged in shipping and replacement is not feasible. While extremely rare, if we make a mistake we will also refund or replace the item.

New, unopened standard products may be returned within 30 days of delivery for a refund.

Restocking fees apply on opened boxes. Customer is responsible for return shipping costs for preferential returns.

Modular Crawl Space Exhaust Fan System - 1,115 CFM Portable with Duct and Vent

Modular Crawl Space Exhaust Fan System - 1,115 CFM Portable with Duct and Vent

$475.00

$475.00

Professional 1,115 CFM

High-capacity three-speed fan (1,115/822/529 CFM) provides powerful exhaust ventilation for serious moisture problems—complete air changes every 2-3 minutes in typical crawl spaces.

Modular Portable Design

Frame and base separate for easy entry through tight crawl space access, then reassemble inside—portable design allows repositioning or dual-use as circulation fan.

Complete System Included

Includes 12" fan, 10" flex duct, 8"×16" foundation vent, connectors, and 9' cord—everything needed for professional exhaust ventilation in one package.

OSHA Compliant Safety

Meets OSHA standards with approved blade guard and totally enclosed motor—safe for confined space operation with corrosion-resistant construction.

Modular Crawl Space Exhaust Fan System - 1,115 CFM Portable with Duct and Vent

Silent Moisture Removal

This high-capacity, quiet modular exhaust fan system delivers professional-grade crawl space ventilation with 1,115 CFM on high speed, exhausting moisture, radon, and odors through a 10-inch flex duct connected to a standard 8" × 16" foundation vent. The portable design disassembles for easy crawl space entry, requires no electrician with its plug-in operation, and converts between exhaust and circulation modes—providing versatile moisture control that adapts to your specific ventilation needs.

Optional Automated Control

Pair with separately available humidistat and weather station controllers for fully automated operation. Set the humidistat to activate the fan when crawl space humidity reaches your preset level, and configure the weather station to prevent operation when outdoor humidity exceeds indoor levels—creating an intelligent ventilation system that operates only when beneficial. (Controllers sold separately)