S-2x4-0001 Details OEM Make: DiversitechPart Number: S-2x4-0001Dimensions: 12.22 x 17.63 x 21Outside Diameter: 17.63"Length: 21.00"Inside Diameter: 12.22"Top: Open with a gasketBottom: Open with a gasketShape: RoundApprox. Square Footage of Filter Media: 180Notes: The media for this Diversitech dust collector filter is Fire Retardant 80/20. (Select the 80/20 FR version from the dropdown box above.) 80/20 FR is best to filter plasma cutting, welding, and laser cutting, almost all metal processing if you are exhausting outside of your facility. This media is chemically treated to inhibit combustion where sparks or burning particulate may reach the filter. If you are just collecting general manufacturing dust then selecting 80/20 cellulose/polyester media on this filter can save you some money. Give us a call at (866) 393-0297 and we can help you determine the proper filter media for your application.