Factory mount-sets come in two types: flush- or rack-mounted. Flush, or standoff, mounts are used to mount the collectors at the same pitch as the roof. A rack mount has precut or adjustable legs to tilt the collector at a steeper angle than the roof.
Both flush and rack mounts can be ordered for ground-mounted systems depending on the design and amount of standardized material used. If a ground mount has a structure built from angle, square, or round stock, a low-cost flush-mount kit can be used as an interface between the site-built mounts and the collectors. The flush-mount kits will likely include some sort of channel feet, with clips or mounts that attach to the collector. The channel feet can then be bolted or screwed to the site-built rack.