Fully assembled. Thousands of deep cleaning fibers reduce allergens up to 90%. Designed specifically to clean dirt in grooves and crevices. Handle extends up to 3' and pivots and locks into 4 different positions. Perfect for cleaning angled surfaces such as ceiling fans, wood furniture, cabinet corners, baseboards, and crown molding. Includes 1 handle, and 1 unscented duster. Refer to model No. 16944 (SKU 627600) for duster refills.