3M Filter Retainer， 501 FILTER，RETAINER，WE 1251B001 (Pack of2)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Approved 3M system component</li><li>Designed to hold 3M Particulate Filter 5N11 and 5P71/07194 (AAD) (sold separately)</li><li>Component works with 3M Respirator 5000 Series， 3M Cartridges 6000 Series， and 3M Filter Adapter 603</li><li>Color: Translucent white</li><li>Measures 4” high x 8.5” long x 4.5” wide</li></ul></div><img src="http://ecx.images-amazon.com/images/I/21MzSDqVCfL.jpg" noproxy>