Take advantage of the lowest prices of the year at Berkey Filters. Save up to 70% during Black Friday and Cyber Monday. *Sale details: Sale Bundles, dealer pricing, and coupon code GIVINGDEC10 ends Friday, December 19, 2019, @ 11:59 PM MST. All coupon codes including GIVINGDEC10 are not applicable to scratch and dent systems, sale bundles or dealer priced items. Bundles cannot be altered in any way, and are only available while supplies last.