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Frequently Asked Questions View all FAQs
How do you order the correct replacement parts?

Before ordering replacement parts, make sure you have the fan model and serial number.

Where can I find instructions to wire a motor on my fan?

The nameplate of the motor includes a wiring diagram. Wiring diagrams can also be found beneath the motor image in our Buy Parts section. Simply click the wiring diagram icon to view it.

Can I install a thermostat?

Yes, but only if the thermostat has a simple on/off operation. Please note: if the thermostat varies the amount of voltage delivered, it will damage the motor and void the warranty.

Can I install my whole house fan vertically?

Comfort Cooler (CC) series whole-house fans may be mounted vertically, however, the AS and CSS shutters will not function properly in the vertical position. We do not carry a ceiling shutter for vertical installation. Vertical installation instructions.

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SPL Series Belt-Driven Portable Barrel Fan

QUALITYProducts.
SINCE 1948.

SPL Series Belt-Driven Portable Barrel Fan

Owner's Manual
Sales Sheet
Choose a model below to view drawing

The SPL Series is a high-performance belt-driven portable barrel fan engineered for dependable, high-volume airflow in demanding environments. Designed with a slim barrel profile and heavy-duty construction, SPL fans deliver strong air movement with long-term reliability.

Available in 36″ and 42″ diameters, SPL models move up to 14,445 CFM using a ½ HP motor in single-speed or two-speed configurations. Deep-pitch blades maximize air delivery, while the integrated automatic belt tensioner maintains proper belt alignment, belt tension and consistent performance with reduced maintenance requirements.

Field-proven in high-utilization industrial and rental environments, the SPL Series is built to perform day after day under real-world conditions.

  • High-airflow performance – deep-pitch blades deliver up to 14,445 CFM
  • Automatic belt tensioner – maintains proper belt tension and reduces routine adjustment
  • Single-speed and two-speed models – flexible airflow control
  • 115V single-phase power – cord and molded plug included
  • Portable drum/barrel design – two large no-flat wheels and rear grab point allow quick tilt-back transport
  • Heavy-duty painted-steel barrel – built for industrial durability
  • Roll-formed “ogee” barrel profile – curved double-step wall adds stiffness and resists barrel deformation
  • OSHA spiral-wound guards – strength and safety in one package
  • Protected switch housing – barrel-mounted control sits behind a steel guard to prevent accidental jobsite damage
  • Factory-stocked replacement parts – motors, blades, guards, and wheels ship quickly to minimize downtime

36″ Models

  • SPL3613 – Single speed – 12,100 CFM
  • SPL3623 – Two speed – 12,100 / 8,060 CFM

42″ Models

  • SPL4213 – Single speed – 14,445 CFM
  • SPL4223 – Two speed – 14,445 / 9,550 CFM

Motor & drive

  • ½ HP
  • Belt-driven
  • Single-speed or two-speed options
  • RPM: 500 (single) / 500–330 (two-speed)
  • Amps: 7.3–7.5
  • Electrical: 115V single-phase with cord and molded plug
  • Automatic belt tensioner standard

Dimensions & approximate weight

  • 36″: 40″ W × 21″ D × 40″ H – 113 lbs
  • 42″: 45″ W × 21″ D × 46″ H – 123 lbs
  • Warehouses and distribution centers
  • Manufacturing facilities
  • Fabrication shops
  • Agricultural buildings
  • Rental fleets and event cooling
  • Large garages and service bays

The SPL Series is engineered for customers who require durable construction and dependable airflow in a portable format. Deep-pitch blades deliver strong air movement, while the automatic belt tensioner helps reduce maintenance and extend service life.

Designed to move easily on large wheels with a rear grab point, SPL fans can be repositioned in seconds. The heavy-duty painted-steel barrel, rigid roll-formed profile, protected switch housing, and OSHA spiral-wound guards are built to withstand everyday industrial use.

Every unit ships fully assembled and performance tested. Fully supported with factory-stocked replacement parts, SPL fans are designed to be maintained, not replaced.

Built in the USA with a blend of domestic and foreign components, the SPL Series reflects Triangle Engineering’s commitment to durable, serviceable industrial airflow solutions.

Details

  • Slim design
  • Single and two-speed motors
  • 4 blades
  • Automatic belt tensioner
  • Heavy gauge steel barrel

See full specifications for sizing and performance data

View Full Specs