Get 4-Pack Purafilter Gold High-Efficiency Air Filters from Groupon.com.
Price:   $19.99 (Reg: $55.96)
Discount:   15% via coupon "SALE3" (exp 02/24)
Shipping:   Free on $34.99 or more
Final Price:  $19.99 - 15% = $16.99 + Free Shipping on $34.99 or more
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