PRECISE & RELIABLE: Upgrade your pool's filtration system with this 1/4 inch NPT bottom threaded pressure gauge, designed for select Hayward sand and DE pool filters. It features a 0-60 psi range for accurate pressure monitoring and optimal filtration performance. ROBUST CONSTRUCTION: Durable design with a brass body, polycarbonate case, and lens. Resistant to pressure fluctuations and environmental conditions, ensuring long-term reliability. SIMPLE INSTALLATION: Easy to install with a secure threaded connection. No additional tools or parts required, making it ideal for replacing damaged or worn gauges. OPTIMAL FILTRATION MAINTENANCE: Enables regular pressure monitoring to support efficient filtration and backwash cycles. Helps maintain clean, clear pool water for a better swimming experience. COMPATIBILITY: Fits Pro Series models S140T, S144T, S180T, S210T, S220T, S220T2, S230T, S244T, S244T2, S270T, S164T, S166T, S210S, S244S, S310S, S160T, S200, S240, S190T, and MicroClear vertical grid DE filters S245T; compatible with Perflex EC30, EC40. ACCURATE READINGS: Provides precise pressure measurements in psi. Designed for consistent performance with clear, easy-to-read markings. PRODUCT DETAILS: Color may vary slightly due to lighting and screen settings. Package includes 2 x Filter Pressure Gauges. Other items not included. Measurement tolerance: +/- 1-3 cm.