How to choose tunnel fans for poultry houses
Direct answer: Pick Box (GPF), Hammer-shutter (ZHF) or Cone (GKF) by wall opening style, then housing material (galvanized, FRP on cone, or 304 SS frame where quoted) and 1-phase or 3-phase / 50 or 60 Hz. Catalogue sizes and m³/h are on the exhaust fans page; confirm every figure on the written quotation with house dimensions.
EcoHarvest supplies three wall exhaust fan types for tunnel-ventilated poultry houses: Box (GPF), Hammer-shutter (ZHF) and Cone (GKF). Each is specified to the wall opening and the power supply, not sold as a one-size kit.
Fan type: Box, Hammer-shutter or Cone
Catalogue sizes and air volumes in m³/h for all three types are listed on the exhaust fans page. Cone fans have a discharge cone and come in galvanized steel or FRP housings. Name the type you want on the inquiry.
Type comparison
| Type | Series | Typical role | Housing notes |
|---|---|---|---|
| Box | GPF | Square-wall tunnel exhaust | Galvanized or 304 SS frame as quoted |
| Hammer-shutter | ZHF | Hammer-shutter wall exhaust | Galvanized housing |
| Cone | GKF | Discharge-cone wall exhaust | Galvanized steel or FRP |
Sample GPF (Box) catalogue sizes
| Model | Air volume | Size | Power | Dims (mm) |
|---|---|---|---|---|
| GPF-36 | 25900 m³/h | 36" | 750 W | 1000×1000×450 |
| GPF-50 | 43900 m³/h | 50" | 1100 W | 1380×1380×450 |
| GPF-51 | 45400 m³/h | 51" | 1100 W | 1435×1435×450 |
| GPF-53 | 52100 m³/h | 53" | 1500 W | 1530×1530×450 |
Catalogue figures from the exhaust fans page. Confirm airflow, power and dimensions on the written quotation for your opening and static pressure.
Housing material and power supply
Galvanized housings suit general poultry and swine house walls; FRP is used on Cone fans where corrosion or wash-down matters. Motors are 1-phase or 3-phase, 50 or 60 Hz, matched to the supply at your site.
Fans as part of the tunnel system
Tunnel fans are designed together with the evaporative cooling pads, and with light traps on dark-out houses, so the whole set is quoted as one design for one house.
Fan type, size and count are confirmed per house on the written quotation. Send house length and width, eave or ridge height, livestock and stocking, voltage and frequency, and whether the house is new or a retrofit.
How to choose — steps
- Name the fan type: Box (GPF), Hammer-shutter (ZHF) or Cone (GKF).
- Give the wall opening size or the target fan size.
- Name the housing material (galvanized, FRP for Cone, or stainless where required).
- State voltage and frequency (1-phase or 3-phase, 50 or 60 Hz).
- Send house length, width, eave/ridge height, species and stocking, and whether pads or light traps are part of the same design.
- Email sales@ecoharvestx.com for a written quotation.
FAQ
What is the difference between Box, Hammer-shutter and Cone?
Box (GPF) is the square-wall tunnel exhaust style. Hammer-shutter (ZHF) is the hammer-shutter wall style. Cone (GKF) adds a discharge cone and is offered in galvanized steel or FRP. Pick one type on the inquiry.
Galvanized or FRP — which housing?
Galvanized housings suit general poultry and swine house walls. FRP is available on Cone (GKF) where corrosion or wash-down matters. Frame options such as 304 SS are confirmed on the quotation when requested.
What should I send for a quote?
Fan type, opening or size, housing material, voltage and frequency, house length and width, eave or ridge height, species and stocking, country, and whether cooling pads or light traps are included.
Do catalogue m³/h figures replace a quotation?
No. Catalogue air volumes on the exhaust fans page are reference figures. Confirm airflow and power on the written quotation for your opening and working static pressure.