Key Features

• Perfect Compatibility – Designed specifically for PTM-643 152oz/4.5L wireless stainless steel cat water fountain. Precision-engineered to fit perfectly – no leaks, no overflow, no pump strain. Please check your fountain model (PTM-643) before purchase.
• 5-Stage Advanced Filtration – Same premium filtration as the original: (1) Non-Woven Fabric traps hair & debris; (2) Activated Carbon removes chlorine, bad taste & odor; (3) Maifanstone adsorbs heavy metals & releases trace minerals; (4) Ion Exchange Resin softens water & improves taste; (5) High-Density Sponge captures fine particles. Every sip is clean and fresh.
• 8+8+1 Value Bundle + Longer Life – Includes 8 premium filters + 8 pump sponges + 1 cleaning brush. Replace every 2-4 weeks – that's twice as long as standard 1-2 week filters. Less frequent changes = lower cost and less hassle. The included brush helps you clean hard-to-reach areas and extend pump life.
• Easy Installation – Soak filter in clean water for 5 minutes, rinse thoroughly for 30 seconds before use. Follow our simple guide: soak → rinse → insert into tray → close and turn on. Works just like the original – no learning curve.
• Quality You Can Trust – Made with premium materials, individually sealed for freshness. 100% satisfaction guarantee – if you're not completely satisfied, we'll refund you. No questions asked. Your pet's health and hydration are our priority.

Specifications