Ventilation Voloume Control Damper

{"cid":"73224","pid":"17580622","pimg_url":"\/\/img1.b2bforus.com\/39\/74\/98175ef26187\/product\/53177188_s-w400xh400.jpg","name":"Adjusted air volume non-return damper","attrs":{"Price":"Negotiable","MOQ":"50 Pieces","Delivery Time":"Negotiable","Brand":"Greenairsys"}}

{"cid":"73224","pid":"17580614","pimg_url":"\/\/img1.b2bforus.com\/39\/74\/98175ef26187\/product\/53177145_s-w400xh400.jpg","name":"Ventilation butterfly valve opposed blade damper (HVAC), HVAC duct dampers","attrs":{"Price":"Negotiable","MOQ":"104 Pieces","Delivery Time":"Negotiable","Brand":"Greenairsys"}}

{"cid":"73224","pid":"17580603","pimg_url":"\/\/img1.b2bforus.com\/39\/74\/98175ef26187\/product\/53177101_s-w400xh400.jpg","name":"Adjust Round Air Volume Manual Volume Control Damper, Air Volume Control Damper, Round Volume Damper","attrs":{"Price":"Negotiable","MOQ":"100 Pieces","Delivery Time":"Negotiable","Brand":"Greenairsys"}}

{"cid":"73224","pid":"17580595","pimg_url":"\/\/img1.b2bforus.com\/39\/74\/98175ef26187\/product\/53177039_s-w400xh400.jpg","name":"Vent Round Ceiling Diffuser Parts Manual Round Plastic Butterfly Valve Air Volume Controller For Duct","attrs":{"Price":"Negotiable","MOQ":"100 Pieces","Delivery Time":"Negotiable","Brand":"Greenairsys"}}