Unicel 5CH 502AM 50 Sq.Ft. Marquis, Cal Spas Filter, 5 3 16"x12 1 2"L, Bar Handle x 2"MPT swimline international corp reliable heater control with the 21071504863 reliable heater control with the correct Pentair replacement membrane keypad Helps maintain reliable heater performance clear water for an optimal spa experience ✅ Product Features: 🛁 High Filtration Capacity – 50 square feet of filtration area for superior cleaning 🔧 Easy Installation – Bar handle and 2" male pipe thread (MPT) for quick setup 💧 Durable Construction – Made with premium filter media for long lasting performance 🔄 Compatible Models – Specifically designed for use with Marquis and Cal Spas 📏 Specifications: Dimensions: 5 3 16" diameter x 12 1 2" length End Cap: Bar handle x 2" MPT Material: High quality polyester filter media ⚙️ Maintenance Tips: Regularly clean the filter to maintain water clarity and spa efficiency Replace every 12 months or as needed for optimal performance 🛠️ Premier Pool & Spa offers a comprehensive selection of spa filters and maintenance products to ensure your spa is always in perfect condition