QUALITYProducts.
SINCE 1948.

• Heavy-gauge galvanized construction
  Corrosion-resistant wall box, frame, and blade stand up to moisture, ammonia, and daily washdowns—ideal for long service life in barns, greenhouses, and storage rooms.

• Rolled inlet venturi
  Aerodynamic inlet reduces turbulence and pressure loss, promoting smoother, more efficient airflow through the fan opening.

• Dual-side bird screens
  Galvanized welded screens on the intake and discharge help keep debris and pests out while protecting moving components.

• Automatic belt management (X-Wing tensioner)
  Triangle Engineering’s X-Wing automatic belt tensioner maintains proper belt tension to prolong belt life, reduce slippage, and help the fan hold its performance over time.

• Vibration-reducing bearings
  Rubber-isolated fan bearings minimize vibration and mechanical noise for smoother, quieter, and more dependable operation.

• Ships fully assembled & tested
  Arrives ready for quick field installation—shorter install windows mean less downtime for your operation.

• TEAO motors built for ag
  Totally Enclosed Air Over motors are designed for dusty/humid environments common to livestock and horticulture, supporting reliable, continuous duty.

• Flexible power, simple retrofits
  Standard 230V single-phase (115V consult factory) and 230/460V three-phase options make upgrades and replacements straightforward across facilities.

• Blade & size choices to match the job
  4-blade and 6-blade configurations in 36″, 42″, 48″, and 54″ let you balance airflow and pressure to your building design (typical rating points 0.00″–0.10″ w.g.).

• Made in the USA + parts on hand
  Manufactured in the USA (with a mix of domestic and foreign components) and supported by readily available, in-stock replacement parts to keep you running.

• Built for agriculture’s daily demands
  From livestock barns to greenhouses and crop storage, the PFG belt-drive line delivers durable, dependable agricultural exhaust with installation, service, and uptime in mind.

Sizes & models (36″–54″)

• Standard diameters: 36″, 42″, 48″, 54″.

• Drive/blade options: 4-blade and 6-blade configurations by size.

• Use cases: agricultural exhaust for livestock facilities, greenhouses, and crop storage.

Construction & finish

• Rugged galvanized build: heavy-gauge galvanized wall box, frame, and blade for corrosion resistance in demanding ag environments.

• Aerodynamic inlet: rolled inlet venturi to reduce turbulence and improve airflow efficiency.

• Dual-side protection: galvanized welded bird screen, front and back.

• Automatic belt management: Triangle Engineering X-Wing automatic belt tensioner helps prolong belt life and maintain efficient performance over time.

• Vibration-reducing bearings: rubber-isolated fan bearings minimize vibration and mechanical noise for smoother, more dependable operation.

• Finish & readiness: galvanized steel construction; ships fully assembled and tested for quick field installation.

• Origin & support: Made in the USA (with a mix of domestic and foreign components) with readily available, in-stock replacement parts.

Motor types, voltages & horsepower range

• Motor type: Totally Enclosed air over (TEAO), suitable for dusty/humid agricultural settings.

• Standard voltages:

  • Single-phase: 230V (consult factory for 115v options)
  • Three-phase: 230V, 460V

• Motor HP range : 1/2 HP and 1 HP (by size/blade configuration).

Operating range

• Static pressure selection: fans are rated at common agricultural SP points (e.g., 0.00″–0.10″ w.g.). Select per your building design SP and required CFM.

• Ambient temperature: standard TE motors for typical ag environments; contact us for high-ambient or special-duty requirements.

Round out your PFG belt-drive install with purpose-built add-ons that improve control, protect against weather, and keep airflow consistent. Choose from shutters, rain hoods, and thermostats sized to match your fan.

Shutters and Dampers – Cut back-drafts and weather intrusion when fans are off. Rigid, ag-grade blades sized to each PFG diameter for clean, bolt-on installs.

Rain hoods – Shield the opening from rain and wind without choking airflow. Flanged, all-weather hoods sized by fan diameter for quick mounting.

Thermostats – Automatic, temperature-based staging for steady conditions and energy savings. Simple wiring for standard 230V single-phase (ask about 115V/3-phase).

PFG belt-drive agricultural exhaust fans are used across livestock and horticulture to remove heat, humidity, and contaminants, protecting animals, crops, and equipment while stabilizing indoor conditions.

Poultry houses (broiler, breeder, layer)

• Sidewall or end-wall exhaust for cross or tunnel ventilation.

• Moves heat and ammonia out fast to reduce heat stress and odor.

• Pair with shutters and thermostats for staged, seasonal control.

Swine barns (farrowing, nursery, finishing)

• Negative-pressure exhaust to pull fresh air through inlets.

• Controls moisture and gases for healthier animals and drier floors.

• Rugged galvanized build stands up to corrosive environments.

Dairy & beef (freestall, holding pens, parlors)

• Exhausts warm, humid air to support cow comfort and air quality.

• Use along sidewalls; complement with circulation fans over stalls.

• Ships ready for quick install during retrofits or expansions.

Greenhouses & nurseries

• End-wall exhaust to regulate temperature and humidity.

• Helps limit foliar disease pressure and improve transpiration.

• Add rain hoods on exposed walls; stage with simple thermostats.

Crop & produce storage (potato, onion, seed)

• Removes warm, moist air to reduce condensation and spoilage.

• Works with intake louvers for steady air exchange.

• All-galvanized construction endures cool, damp conditions.

Equipment, pack, and utility rooms

• General exhaust for fumes and process heat.

• TEAO motors handle dusty, humid spaces common on farms.

• Clean, bolt-on fit with shutters for tight pressure control.

• Maximum value per CFM
  If you want big, dependable airflow at a smart price point, a PFG belt-drive agricultural exhaust fan delivers outstanding CFM-per-dollar for barns, greenhouses, and crop storage.

• Built for the realities of agriculture
  Heavy-gauge galvanized wall box, frame, and blade, dual-side bird screens, and a rolled inlet venturi stand up to moisture, ammonia, dust, and daily washdowns while keeping airflow efficient.

• Smoother, quieter operation
  Rubber-isolated fan bearings reduce vibration and mechanical noise, helping protect the structure and creating a better environment for people, animals, and plants.

• Consistent performance with less belt fuss
  Triangle Engineering’s X-Wing automatic belt tensioner maintains proper belt tension to minimize slippage, prolong belt life, and help the fan hold its performance over time.

• Dial-in flexibility
  Belt-drive architecture makes it simple to match fan output to your building’s design static pressure and seasonal needs—ideal for new projects and retrofits alike.

• TEAO motors that thrive in tough conditions
  Totally Enclosed Air Over motors are purpose-built for dusty/humid ag environments and available in common facility voltages (230V single-phase; 230/460V three-phase).

• Right size, right blade
  Four sizes (36″, 42″, 48″, 54″) with 4-blade and 6-blade configurations let you balance airflow and pressure precisely for your room geometry, inlets, and target SP (0.00″–0.10″ w.g. typical).

• Fast install, fast uptime
  Every unit ships fully assembled and factory-tested, cutting installation time and getting ventilation online quickly during builds, expansions, or emergency replacements.

• Made in the USA, backed by parts on the shelf
  Manufactured in the USA (with a mix of domestic and foreign components) and supported with readily available, in-stock replacement parts to keep your operation running.

• A proven, serviceable choice
  For teams that prefer the familiar, field-serviceable simplicity of a belt-drive agricultural exhaust fan—with modern upgrades that tame maintenance—the PFG series is a reliable, long-term solution.

Ready to spec your fan? Request a quote or download the belt-drive PFG cut sheet.