861556 BBJ Mold Control for Air Ducts and HVAC SystemsBBJ Mold Control is a concentrated antimicrobial for controlling microorganism growth in HVAC systems and air ducts. The 15 oz Concentrate makes 7.5 gallons.861556 BBJ Mold Control Coverage and Use Made for HVAC systems and air ducts — formulated for use inside ductwork and mechanical systems. Controls growth system-wide — targets microorganisms across the entire system, not just one section. 15 oz makes 7.5 gallons — one concentrated container yields a full working batch. Concentrated format — ships as a 15 oz container you dilute on site. BBJ Mold Control Where It's UsedAir-duct cleaning companies and HVAC service technicians use BBJ Mold Control to treat microbial growth inside duct systems and air handlers. It suits residential and commercial HVAC systems where microorganism control across the whole system is the goal. The 15-ounce concentrate dilutes to 7.5 gallons, covering a full duct-cleaning treatment. Check the product data sheet and SDS for dilution and application detail.Documents861556 Product Data Sheet (PDF)861556 Safety Data Sheet (SDS) (PDF) Specifications SKU 861556 Concentrate Size 15 oz Diluted Yield 7.5 gallons System Type Residential and commercial HVAC systems