P4GP Special design for heating, cooling, ventilation and air conditioning systems operating at low and medium pressure. Used in air ducts for return air. The aerodynamic design offers very low pressure loss. One way airfl ow from indoors towards outdoors, Louvers balanced to give good air flow at appropriate pressure level
• Not suitable for high humidity applications.
• Variable air flow control.
• High valve body improving air flow, reducing noise, with intergraded spring fasteners.
• Simple removal for cleaning.