Features:1.The quality of the airflow damper is reliable and it is easy for operation.2.The power supply can be 220 V or 240 V and the blade material can be decided by the customer.3.The damper is made of galvanized steel plate and it looks good and it is durable.4.The steel blade is reinforced to increase its rigid character.5.The round wind damper or less than 200mm single blade damper can also be called as butterfly valve, The butterfly valve is different from the opposed multi-blade regulating damper.6.There are elastic sealants on both sides of the blade to increase the sealing character for the opposed multi-blade regulating damper.7.The gap between the blade and the damper itself is made as small as possible when the damper is closed due to high quality copper blade is used.The opposed multi-blade regulating damper is designed to regulate the airflow andcan be used in the distribution pipes to control the fresh air. The opposed multi-bladeregulating damper made by our plant has the features of good design, solid& practical, nice looking and easy to operate. They can be manual-operated ormotor-operated. We have steel blades or alum. alloy blades for consideration.They can be widely used in the plants, companies, hotels, villas, office buildingsetc. producing area:China payment:To be negotiated supplying capacity:1-50000 pcs