Click the coupon on the item page and add two 3-packs to the cart. They should show up as $20.30 at the checkout before shipping & tax.
https://www.amazon.com/gp/product/B078W1ZJSN/
If someone is going to claim these aren’t NSF certified, they are. https://info.nsf.org/Certified/DW…andard=042
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