Philips respironics DreamStation Disposable Ultra-Fine Filter (12)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> Replacement Philips Respironics DreamStation Ultra-Fine Pollen Filters </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Same as OEM# 1122518 </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> This filter only fits the Philips Respironics DreamStation Series CPAP and BiPAP machines </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> 2 1/4" x 1" </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> HCPCS A7038 </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/414jaDCRX1L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41snPH7fXZL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41WUm80Ci4L.jpg" noproxy>