For optimal performance of your heating and cooling system or HVAC system, change your furnace filter at least once per. Fits systems calling for a filter thickness of ” and larger.
RECYCLED CONTENT: Verified to contain at least 50% recycled content by GreenCircle Certified, a third-party auditor.
Berkey® Water Filter System (Stainless Gravity Countertop) + 2 BOROUX Foundation™ Filters. BOROUX System + Foundation™ Filters. BOROUX System + Foundation™ + Proactive™. BOROUX Foundation (Gravity). BOROUX Water View Spigot.