Costco Members: 2-Pack Winix Replacement Air Filters: C535 $65, C545 $60 + Free Shipping

Costco Members: 2-Pack Winix Replacement Air Filters: C535 $65, C545 $60 + Free Shipping. Costco Wholesale has for Costco Members: 2-Pack Winix Replacement Air Purifier Filters (various) on sale as listed below. Shipping is free. Available: 2-Pack Winix Filter for C545 $59.99