Bin vent apparatus and methods

A storage bin for agricultural products comprising an interior bounded by a cylindrical sidewall and a roof;

• and plurality of discrete, roof-mounted vent filters, each of the vent filters including an inlet for receiving air from an interior of a bin, an outlet for venting air from the vent, a fluid flow path between the inlet and the outlet, and one or more filters disposed in the fluid flow path between the inlet and the outlet to filter the air received from the interior of the bin, and a fan disposed in the flow path and downstream of the one or more filters, the fan being selectively operable to cause air to flow into the inlet, through the filter, and out of the outlet;
• wherein each of the vent filters includes one or more pressurized air nozzles directed toward the filter on a downstream side thereof and in fluid communication with a source of pressurized air for cleaning the filter using pressurized air.