Flat roof condenser stands. Collapses down to 4″ when shipping. Assembly required in the field. All hardware included in each kit to assemble. Includes all bolt harware to asseble in the field. Does not include, u-bolts or other achoring devices to anchor to the roof. Consult and engineer. Consult an Engineer to insure roof can handle weight loads. Assembly instructions included or you can print them from our website.