Nalgene Filter Holder with Receiver, PSF 47 mm, 293mm H x 134mm OD, 1000 ml Capacity (Case of 4): Science Lab Bottletop Filters: Amazon.com: Industrial & Scientific
Thermo Scientific Nalgene Rapid-Flow Sterile Single Use Vacuum Filter Units | Fisher Scientific
DS0310-4050 Thermo Scientific Nalgene Filter Funnel, Threaded Filter Holder With Funnel PSF 47 mm, 500 ml Case of 1 - Lab Genome