This motor filter is a great replacement for your Eureka vacuum cleaner. Designed for use with the Rally Canister World Vac, this filter is compatible with models 3800, 3700, 6800, 3988A, and 6865A. The set includes one motor filter, which is suitable for use with canister/cylinder vacuum cleaners. The filter is black in color and is made for use with Eureka brand vacuums. It is important to regularly replace your vacuum's filter to maintain its efficiency in picking up dirt and debris. This high-quality filter is made to last and will help keep your home clean and healthy.