This frame is a style that will cover a very wide date range. It broadly references rectangular frames such as the Oseberg Ship frameas well as medieval and later frames. Floor standing ones of similar shape were in use right into recent history.
This one is a convenient lap or table standing size, it uses a suspended rod at the top and a removable rod at the bottom to support the warp and tension can be adjusted from the top.
These budget frames are constructed with modern methods to keep their costs low; they are made to order, lead times may vary, but are currently between 3 and 6 weeks.