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3045 duct dampers products are offered for sale by suppliers on Alibaba.com, of which hvac systems parts accounts for 64%, registers & grilles accounts for 9%, and hvac systems accounts for 5%. A wide variety of duct dampers options are available to you, such as printing shops, advertising company and machinery repair shops.You can also choose from household, bathroom and home duct dampers,As well as from not available, provided duct dampers,and whether duct dampers is manual, or electrical.