Description: 【Quality Material】: This Air Vent Strainer is made of quality stainless steel, which is durable and wear resistant, ensuring long time use. 【Practical Accessory】: This ventilation Pool Filter Screen serves as a practical replacement part for your pool or SPA ventilation filters, helping to maintain clean water. 【Versatile Use】: This Pool and Spa Filter is ideal for use with Pool, FNS pools, and DE filters. 【Product Dimensions】: The size of this pool filter cover is 4.45cm x 4.45cm x 3.56cm, making it suitable for most pools and spas. 【Practical Gift】: This Pool Filter Replacement makes a practical gift for your family or friends to help them replace their old parts with new ones. Specification: Material: Stainless Steel Size Chart: 4.45cmx4.45cmx3.56cm/1.75inchx1.75inchx1.40inch Package Includes: 1 Pool Filter Screen(3 Pack) Note: Please allow slightly errors 1-2cm differences due to manual measurement.