Channellock 2-1/2 to 4 Gallon Foam Standard Wet/Dry Vacuum Filter is designed to provide reliable filtration for wet/dry vacuums with a capacity ranging from 2.5 to 4 gallons. This foam filter is a standard type, i for maintaining the vacuum’s performance and ensuring efficient cleanup. It comes packaged in a convenient bag and is sold as a single unit, making it easy to replace and keep your vacuum running smoothly. Model Number: VFF21.CL