Particular design features: Very high-performance 200 mm fan with compact overall height. Low operating noise level at high counterpressure. Very smooth running 3-phase fan drive with high efficiency. Standard models available with tach output and PWM control input (P) or 0-10VDC / PWM control input (O). General features: Materials: Housing made of aluminium, impeller made of fibreglass-reinforced PA; housing with grounding lug for M4 x 8 screw. Electronic commutation completely integrated. Protected against reverse polarity and locking. El. connection via single strands AWG 20, UL 1007 / AWG 22, UL 1061, bared and tin-plated. Air exhaust over bars. Direction of rotation counter-clockwise seen on rotor. Mass: 1000 g.