It can be of your own construction but by using this Halls Supreme base the task becomes much easier.
Pre-fabricated galvanised steel base is easy to install & provides a strong foundation for the greenhouse.
Finish - Available in plain or green powder coated finish.
6'4" (1928mm) wide,
5" (127mm) high,
& available in three lengths -
4'4" (1326mm) Long,
6'4" (1948mm) Long,
or 8'5" (2568mm) Long.
Select the correct length to suit your greenhouse.
Please note: this base is ONLY suitable for a Halls 6'4" (1930mm) wide Supreme greenhouse & can only be purchased at the same time as a greenhouse.