ventilation fan for greenhouse houses

ventilation fan,exhaust fan 1.low noise,big airfow 2.thick zinc coat,anti-rust, 3.low energy consumption 4.CE certificate

Model	Blade Diameter/mm	Frequency/Hz	Currency/A	Input Power/Kw	Voltage/v	Rotational Speed(r/min)	Noise(db)	Airflow (m3/h)	Size/mm
DM1380	1270(50in)	50	2.8	1.1	380	1440	<=64	43170	1380*1380*450

Features,

Siemens Motor: IP 55Frame: galvanized sheet. The thickness of galvanized coat is 180g/m2Thickness of blade: 1.2mm   BA430 stainless steel. It comes from the Krupp Stainless Co., Blades are formed by stamping while the angle is suitable, which can make biggest airflow as well as the smallest noise and not out of shape or rupture during long using term.Shutter: thickness is 0.8mm and the middle piece is 1.5mmFrame thinckness: top and bottom frame is 1mm; the left and right frame is 0.8mmOpening system: 30% fiberglas and 70% nylon. The column is 304 stainless steel. The weight is 1370±4gSmall belt pulley: Aluminum or cast IronBig belt pulley: Allumimium magnesium alloyBearing: Made in Shanghai, China.  Standard: JB/T10238-2001. The gap is 0.04-0.07mmBelt: Janpanese Mitsuboshi beltHousing: thickness is 1mm  galvanized sheetlinkage part: Aluminium instead of plasticProtective net: Two half pieces. Open one half and we can clean the fan. Easy to installSpring: 304 stainless steel.The baseboard can be both used in 1.5HP and 1HP. And the installation hole is square instead of the traditional round ones, which can fix the motor better.Weight:  89kgGuarantee period: 1 year, during which the easy broken parts are offered free of chargeTen strick tests before delivery: airflow test, noise test, libration test, drive concentric test, balde RPM test, etc.

ventilation fan for greenhouse houses