Philips respironics DreamStation Reusable Pollen Filter， Replacement (3)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> Same as OEM Part# 1122446 </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> 2 1/4" x 7/8" x 5/8" </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41qg69fU%2BhL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Hgbi2-egL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41FNKk7TC-L.jpg" noproxy>