Compatible with Type S1 Filters:Size--4.2 x 2.8 inches. Compatible with all for Intex PureSpa models including 28403E, 28407E, 28443E, 28453E, 28421E, 28423E, 28413E, and 28453E, 29001E, 11692. The part/product is not sponsored or endorsed by, or affiliated with the brands it fit, including for Intex PureSpa / Intex.High Quality:Made of easy-to-clean heavy-duty polyester paper for ultimate filtration. Keep the pool water clean, use it in conjunction with a pool pump, and provide the best performance.Powerful Filtration Performance:The powerful thrust of the filter can effectively remove hair, leaves, dust, sediment, sand, impurities, etc. Provide you with clear and clean water, allowing you to easily enjoy your health.Efficient Filtration Area:Provide a larger filter area, make the filter efficiency higher, toughness, resistance to dilute acid, fine filtration, and strong dirt absorption ability.Easy to Clean & Long Service Life:The folding design makes it easier to release stains during cleaning, so it is easy to clean after use. Compared with other filter elements, it provides a larger filter area, longer filter life, reduces the number of filter updates, can be reused, and can be reused after proper cleaning and maintenance, which greatly extends the service life and saves costs.size:Outer diameter 107mm, inner diameter 43mm, height 74mmMaterial:PET+non-woven fabriccolour:bluePackage Contents:4 x Inflatable pool filterOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.