A new Big Brush Kit is available for the Super RBS Brush & Air Wash System from this company. The brush kit, when coupled with the wash system, allows users to clean ductwork that is 20-30 inches high. The standard Super RBS Brush & Air Water System allows for cleaning ductwork that is 5 inches to 22 inches high. The brush kit comes with a 32-inch nylon brush, a 32-inch silica carbide brush and a 13-inch and 15-inch guide leg.

Vac Systems International, 1800 E. Cliff Road, No. 11, Burnsville, MN 55337; (800) 592-3955; fax (952) 808-1584;www.vacsysint.com.