OverviewThe Schaefer SFT-2000 is a shutter-style, low-profile exhaust fan designed for flush wall mounting in thin-walled industrial and agricultural buildings such as greenhouses. It provides high airflow in compact installations while minimizing exterior projection.
Key features- Low-profile design for thin walls and limited exterior space
- Aluminum blades with 22° pitch and rugged PVC shutter for corrosion resistance
- Heavy-duty TEAO totally enclosed motor, direct drive; 1550-1800 rpm (60 Hz)
- Fixed wall-mount installation; powder-coated steel guard; 20 in diameter
- Voltage 115/230 V, single-phase, single speed; speed control compatible (VFD not supported)
Technical specifications- Model: SFT-2000
- Manufacturer: Schaefer
- Diameter: 20 in (50.8 cm)
- Power: 1/3 HP
- CFM (@0.05"): 3120; CFM range (free air): 2501-5000
- Blade material: Aluminum; Number of blades: 4; Blade pitch: 22°
- Motor enclosure: TEAO; RPM (60 Hz): 1550-1800; Drive: Direct
- Voltage: 115/230 V; Phase: 1; Speeds: 1; VFD Compatible: No; Speed control compatible: Yes
- Guard spacing: 1/2" OSHA; Guard material: Powder-coated steel
- Product weight: 31 lb; Shipping dimensions: 27 x 27 x 15 in; Country of origin: US
Applications- Exhaust ventilation for greenhouses, nurseries and thin-wall agricultural buildings
- Light industrial ventilation where low-profile wall-mounted exhaust is required
- Replacement or upgrade of existing wall-mounted exhaust units
Installation and compatibilityThe unit mounts flush to exterior walls and is intended for fixed installation. It ships without a power cord. Compatible with standard single-phase supplies; not compatible with VFDs but accepts simple speed controls. Confirm ducting and performance requirements with manufacturer for specific installations.
Ordering informationAvailable size: 20 in. Consult Schaefer for detailed performance curves, accessories and delivery. Specifications marked TBD should be confirmed with the manufacturer for the intended duct and operating conditions.