💦 Drink Pure, Live Fresh! Experience water that tastes as good as it looks! NSF42 standards ensure top-notch filtration. Twist-lock design for a hassle-free filter change. Fits a wide range of Sub-Zero models for your convenience. Replace every 6 months or 300 gallons for optimal taste. 97.9% chlorine removal Easy twist-lock design NSF42 certified The GLACIER FRESH Water Filter Replacement is designed for Sub-Zero refrigerators, effectively removing 97.9% of chlorine to enhance the taste and smell of your water. With NSF42 certification, this filter ensures high-quality performance and is compatible with various Sub-Zero models. Its innovative twist-lock design allows for easy installation, making it a practical choice for maintaining clean and refreshing water in your home.