Check the listing for details. 3M 56055 (603) Filter Adapters, Pack of 2. Condition: New. Listed at 6.00 USD. Our eBay Store About Us Contact Us Add to Favorite Sellers 3M 56055 (603) Filter Adapters, Pack of 2 6.00 The 3M Filter Adapter 603, Respiratory Protection System Component enables the 5N11 and 5P71 N95 and P95 prefilters to be directly attached to a 3M Full or Half Facepiece 6000, 7000, or FF-400 Series Respirator (all respirators, filters, cartridges, and adapters sold separately). The Filter Adapter 603 may be used multiple times. Use with 3M 501 Filter Retainer. It provides cost effective particle filtering solutions. Warning: This product contains chemicals known to the state of California to cause cancer and birth defects or other reproductive harm. Product Details Approved 3M system component Designed to attach 3M Filters 5N11 and 5P71 N95 and P95 with 3M 501 Filter Retainer Component works with 3M Full or Half Facepieces 6000, 7000, or FF-400 Series Respirators (sold separately) Filter adapter may be used multiple times for convenience Cost effective particle filter solution