These Discount Filters promo codes have expired but may still work.
Details 20% off at discountfilters.com with code scary20 plus extra $5 with fridge + air filter purchase ...Y20 Show Coupon Code Expired 10/24/21
Details Redeem 20% off + extra $5 off with fridge + air filter purchase when you enter this promotional code during checkout. Valid now through October 10th. ...G20 Show Coupon Code Expired 10/10/21
Details Shop online and save at Discount Filters with this promotion code when you check out. Valid now through September 26th. ...L20 Show Coupon Code Expired 09/26/21
Details Redeem 20% off + extra $5 off with fridge + air filter purchase when you enter this Discount Filters promo code during checkout. Valid now through September 12th. ...SUS Show Coupon Code Expired 09/12/21