The Dyson 922676-01 DC40 HEPA Post Filter is a high-quality filter designed specifically for the Dyson DC40 model. Made by EnviroCare, this filter is compatible with Dyson vacuum cleaners and includes one filter in the pack. It is a crucial component for maintaining the cleanliness and efficiency of your vacuum, ensuring that your home remains free from allergens and airborne particles. This HEPA filter is designed to capture small particles and allergens, making it an essential part of your household cleaning routine.