General description Fully compatible, high quality and durable filters. This replacement kit includes a washable pre-motor filter and a post-motor allergy HEPA filter designed for Dyson vacuum cleaners. Technical specifications Yellow pre-motor lifetime washable filter diameter: 153mm Blue post-motor allergy HEPA filter diameter: 151mm Usage To keep your cleaner running at peak performance, please replace your filter every 2-3 months. Easy to remove and replace as part of routine maintenance. Other information Package includes: 2 filters/set for vacuum cleaner filter kit compatible with Dyson.