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

Model	Blade Diameter/mm	Frequency/Hz	Currenc   y/A	Input Power/Kw	Voltage/v	Rotational Speed(r/min)	Noise(db)	Airflow (m3/h)	Size/mm
DB1380	1270(50in)	50	2.8	1.1	380	1440	<=64	51020	1380*1380*1300

Features,

This fan adopts advance oper system,butterfly type, with two semicircle shutter doors, wind resistance is small, good air-tightness and high efficiency For the cone part, adopt new design, plug type connection, not need many bolts and nuts for tightening as before. Intensity of labor is reduced, also improve aesthetic result of fan When the two semicircle shutter doors close, the rubber sealing ring make good air tightness. It is impossible for the outside hot air to enter the room when fans stop.

Components

1.Motor: Siemens

2.Blade: 430BA mirror face stainless steel blades and passed the strict balance test. Biggest airflow and smallest noise

3.Small belt pulley: Aluminium 

4.Big belt pulley: Aluminium magnesium alloy

5.V-belt:Mitsuboshi belt 

6.Spring: 304 stainless steel

7.Motor hole: Installation hole of motor and nut are all six angles instead of the roundness

8.Frame material: galvanized sheet. Thickness of galvanized coat is 180g/m2

9.Rim: al-alloy

10.Fan cowl: galvanized sheet. Thickness is 1mm.

12.Motor hole:Installation hole of motor is six angles instead of the roundness which is easy to assemble and disassemble. (pic 3)

13.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.(pic 4)

14.The guarantee period is one year. The easy-broken parts are offered free of charge during this period

50 inch butterfly exhaust fan