Enjoy a sparkling clean swimming pool by keeping your pool filter working its best. Your pool filter is only as good as its filter, so trust the 2-pack of Summer Waves Replacement Type D Pool and Spa Filter Cartridge to capture contaminants and debris in your water. These replacement filter cartridges filter out debris, dirt, and other contaminants thanks to ultra-fine, heavy-duty paper with more pleats than your average pool filter cartridge. This allows them to catch and hold fine dirt and sand. Each cartridge should be replaced every 2 weeks, allowing you more time to enjoy a refreshing swim all season long. Easily swap out the filter cartridge every 2 weeks and relax in a cleaner, clearer pool. Keep your pool safe and sparkling clean with the Summer Waves Replacement Type D Pool and Spa Filter Cartridge, now in a convenient 2-pack. This filter cartridge is a great choice for any pool or spa owner looking to maintain optimal water quality. Designed for easy installation and long-lasting performance, it fits most pool pumps and is made from ultra-fine, heavy-duty paper capable of capturing particles as small as 10–20 microns. With regular maintenance and cleaning, this filter cartridge can last up to two weeks, depending on usage and water conditions.