The Sentinel X500 anti freeze works in the same way as the Sentinel X100 by protecting against corrosion and limescale but also has the anti freeze property. Brilliant for properties that are vunerable to freezing temperatures.
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Sentinel X500 Anti Freeze 5L
Original price was: $78.00.$54.60Current price is: $54.60.
- Prevents system water from freezing
- Enhanced limescale and corrosion protection
- Protects all system metals against corrosion
- Ensures optimum boiler efficiency
- Prevents boiler noise
- Prevents pin-holing
- Helps prevent the formation of hydrogen gas
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- Prompt service, every time.





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