The CS521 Refrigerator Filter – 3M™ Cuno CS-52 is a white, cylindrical NSF-certified filter with green and black text and certification icons, shown upright on a plain white background. It uses a coconut shell carbon block for efficient filtration.
Image of the CS521 Refrigerator Filter – 3M™ Cuno CS-52, featuring the NSF logo and text: "NSF Certified Performance," "NSF 42 Aesthetic Benefits," "NSF 372 Lead ≤ 0.25%," plus a coconut shell carbon block material label.
A graphic of the CS521 Refrigerator Filter – 3M™ Cuno CS-52 with coconut shell carbon block, text stating Certified 97.6% Contaminant Reduction for chlorine, taste, and odor, and NSF certification icons.
The CS521 Refrigerator Filter – 3M™ Cuno CS-52 is shown in cross-section with a black coconut shell carbon block. Text highlights Naturally Efficient Filtration, noting coconut carbon’s effective water impurity removal, plus an image of a coconut below.
A woman drinks water while holding a sleeping baby, showing the CS521 Refrigerator Filter – 3M™ Cuno CS-52. Pore diagrams reveal its coconut shell carbon block delivers 2x better adsorption than competitors for safer, cleaner water.
A white NSF-certified CS521 Refrigerator Filter – 3M™ Cuno CS-52 is shown on the right. On the left, text reads "Compatible with:" and lists 3M Cuno, Whirlpool, Bosch, InstPure, and Zip models with coconut shell carbon block filtration.
A woman drinks water in a kitchen beside a CS521 Refrigerator Filter – 3M™ Cuno CS-52. Text: 1 filter saves 3,200 plastic bottles, lasts 6 months or 1,500 gallons. Image of the filter is shown on the right.
A modern kitchen with a stainless steel fridge and the CS521 Refrigerator Filter – 3M™ Cuno CS-52, featuring an NSF-certified water filter. Icons show lead-free, leak-free, tool-free use. Text: “High-Quality Water Made Easy.”.
A chart titled Operating Specifications shows values for the CS521 Refrigerator Filter – 3M™ Cuno CS-52: min temp 33°F (0.6°C), max 100°F (38°C), min pressure 20 psi (140 kPa), max 100 psi (689 kPa), capacity 1,500 gal, flow rate 0.5 GPM.
The CS521 Refrigerator Filter – 3M™ Cuno CS-52 is a white, cylindrical NSF-certified filter with green and black text and certification icons, shown upright on a plain white background. It uses a coconut shell carbon block for efficient filtration.
Image of the CS521 Refrigerator Filter – 3M™ Cuno CS-52, featuring the NSF logo and text: "NSF Certified Performance," "NSF 42 Aesthetic Benefits," "NSF 372 Lead ≤ 0.25%," plus a coconut shell carbon block material label.
A graphic of the CS521 Refrigerator Filter – 3M™ Cuno CS-52 with coconut shell carbon block, text stating Certified 97.6% Contaminant Reduction for chlorine, taste, and odor, and NSF certification icons.
The CS521 Refrigerator Filter – 3M™ Cuno CS-52 is shown in cross-section with a black coconut shell carbon block. Text highlights Naturally Efficient Filtration, noting coconut carbon’s effective water impurity removal, plus an image of a coconut below.
A woman drinks water while holding a sleeping baby, showing the CS521 Refrigerator Filter – 3M™ Cuno CS-52. Pore diagrams reveal its coconut shell carbon block delivers 2x better adsorption than competitors for safer, cleaner water.
A white NSF-certified CS521 Refrigerator Filter – 3M™ Cuno CS-52 is shown on the right. On the left, text reads "Compatible with:" and lists 3M Cuno, Whirlpool, Bosch, InstPure, and Zip models with coconut shell carbon block filtration.
A woman drinks water in a kitchen beside a CS521 Refrigerator Filter – 3M™ Cuno CS-52. Text: 1 filter saves 3,200 plastic bottles, lasts 6 months or 1,500 gallons. Image of the filter is shown on the right.
A modern kitchen with a stainless steel fridge and the CS521 Refrigerator Filter – 3M™ Cuno CS-52, featuring an NSF-certified water filter. Icons show lead-free, leak-free, tool-free use. Text: “High-Quality Water Made Easy.”.
A chart titled Operating Specifications shows values for the CS521 Refrigerator Filter – 3M™ Cuno CS-52: min temp 33°F (0.6°C), max 100°F (38°C), min pressure 20 psi (140 kPa), max 100 psi (689 kPa), capacity 1,500 gal, flow rate 0.5 GPM.
The CS521 Refrigerator Filter – 3M™ Cuno CS-52 is a white, cylindrical NSF-certified filter with green and black text and certification icons, shown upright on a plain white background. It uses a coconut shell carbon block for efficient filtration.
Image of the CS521 Refrigerator Filter – 3M™ Cuno CS-52, featuring the NSF logo and text: "NSF Certified Performance," "NSF 42 Aesthetic Benefits," "NSF 372 Lead ≤ 0.25%," plus a coconut shell carbon block material label.
A graphic of the CS521 Refrigerator Filter – 3M™ Cuno CS-52 with coconut shell carbon block, text stating Certified 97.6% Contaminant Reduction for chlorine, taste, and odor, and NSF certification icons.
The CS521 Refrigerator Filter – 3M™ Cuno CS-52 is shown in cross-section with a black coconut shell carbon block. Text highlights Naturally Efficient Filtration, noting coconut carbon’s effective water impurity removal, plus an image of a coconut below.
A woman drinks water while holding a sleeping baby, showing the CS521 Refrigerator Filter – 3M™ Cuno CS-52. Pore diagrams reveal its coconut shell carbon block delivers 2x better adsorption than competitors for safer, cleaner water.
A white NSF-certified CS521 Refrigerator Filter – 3M™ Cuno CS-52 is shown on the right. On the left, text reads "Compatible with:" and lists 3M Cuno, Whirlpool, Bosch, InstPure, and Zip models with coconut shell carbon block filtration.
A woman drinks water in a kitchen beside a CS521 Refrigerator Filter – 3M™ Cuno CS-52. Text: 1 filter saves 3,200 plastic bottles, lasts 6 months or 1,500 gallons. Image of the filter is shown on the right.
A modern kitchen with a stainless steel fridge and the CS521 Refrigerator Filter – 3M™ Cuno CS-52, featuring an NSF-certified water filter. Icons show lead-free, leak-free, tool-free use. Text: “High-Quality Water Made Easy.”.
A chart titled Operating Specifications shows values for the CS521 Refrigerator Filter – 3M™ Cuno CS-52: min temp 33°F (0.6°C), max 100°F (38°C), min pressure 20 psi (140 kPa), max 100 psi (689 kPa), capacity 1,500 gal, flow rate 0.5 GPM.
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