If you have any devices that use Solberg filters (like our hold-down vacuum) DO NOT order them directly from Solbergmfg.com.
They 'jerked me around' for almost two weeks after I paid them, then shipped by a more-expensive method than I chose on their web order form, and billed me for the difference!
From now on, I'll just pay twice as much, and order them from a machine vendor who stocks them, or find a vendor who sells 'exact match' generic filters, probably for half the price.
Lloyd