Since 1905, Johnson Controls has developed and refined air control products by providing the highest quality control dampers that fit your application and size requirements. Now we are including Industrial style dampers in our product offering.
ID-1230 dampers are available in sizes up to 999 in. W x 999 in. H (25,375 mm x 25,375 mm), with either a galvanized,304 stainless steel, or aluminum frame and a choice of seals: