Our lab vacuum filter is made of GG-17 high borosilicate glass and high quality SS304. Each filtration unit comes with a durable SS304 metal frame and easy glide casters for ease of use and cleaning. With a convenient lab vacuum filtration system, you will be filtering with a large surface area in no time. This unit provides consistent and repeatable results at an affordable price. This means faster recovery without compromising quality. No expense has been spared with these vacuum filters, yet we crush the market on pricing to provide great value at a low cost. Our vacuum filters are the best value on the market and each one comes with fantastic customer service, local product support and a 1 year warranty. Upgrade today to see the USA Lab difference. FILTER PAPER LINKS2 um Micron Filter Paper11 um Micron Filter Paper20 um Micron Filter Paper VACFILTER50L SpecificationsGlass MaterialGG-17Frame MaterialStainless SteelPipe Material304 Stainless SteelReaction Bottle VolumeSphere 50LFunnel Size450mm x 250mmFilter Paper Size450mm | 45cmFunnel MaterialStainless SteelFilter Opening¢80 Flange OpeningExterior Size24" x 24" x 60"Packing Weight132lbsGlass Shutoff ValveJoint size is 24/40Drain-Bottle Opening¢45 Flange Opening For Technical Support, Questions, or Other Issues Please Email or Call Us!