DescriptionAir volume control is an indispensable central air conditioning terminal accessory in the ventilation, air conditioning and air purification engineering of industrial plants and civil buildings. The excellent workmanship of our product will bring you a good experience.Features- Color: Beige. - Size: 15.50X11.00X15.00cm/6.09X4.32X5.89 inch. - Material: PP. - It is generally used in air conditioning and ventilation system pipes to adjust the air volume of branch pipes, and can also be used for the mixing adjustment of fresh air and return air. - It is one of the key equipment to control ventilation modes in various environments. - Its main features are flexible operation, low noise, small leakage, wide operating temperature range, reliable structure, safety and convenience. - Professional and practical design with beautiful appearance, easy to carry and use. - It is manufactured with professional technology to ensure the of the product and can work for a long time.