1>Highly efficient and portable. 2>Used for ship close space entry preventilation. 3>Potable type

model no.	diameter	voltage	Frequency	speed	watts	capacity	static	noise
CTF	mm	V	Hz	r/min	w	m³/min	pa	dB(A)
CTF-40	400(16'')	110	50/60	2800/3300	1100	105/120	700/780	79
CTF-40	400(16'')	220/240	50/60	2800/3300	1100	105/120	700/780	79
CTF-40	400(16'')	110	50/60	1400/1720	550	80/95	300/360	68
CTF-40	400(16'')	220/240	50/60	1400/1720	550	80/95	300/360	68
CTF-50	500(20'')	110	50/60	1400/1720	1100	130/145	400/460	73
CTF-50	500(20'')	220/240	50/60	1400/1720	1100	130/145	400/460	73
CTF-60	600(24'')	110	50/60	1400/1720	2000	240/260	480/540	79
CTF-60	600(24'')	220/240	50/60	1400/1720	2000	240/260	480/540	79
CTF-70	700(28'')	110	50/60	1400/1720	2600	310/330	580/650	80
CTF-70	700(28'')	220/240	50/60	1400/1720	2600	310/330	580/650	80

Highly efficient and portable. Used to ventilate hot air and harmful gases from a tank or work area,and supply fresh air and oxygen.the ideal bellmouth type casing is highly efficient,creates little noise and is easy to install in an air duct.Related air ducts are sold separately. 

This Portable fan wih two handle, desiged for 400MM to 500mm fans.

Electric Portable Ventilation fan