Are you installing a round rain water tank or cistern, and need a retaining ring for the gravel pad? There is no better option than this heavy steel ring, custom sized to your tank. A round ring is superior to a square pad because it is stronger (doesn't need stakes) and requires minimal fill and takes up the least space.

This round ring with unique vertical creases will save you money on material and labor for install. Constructed of 3/16" thick mild steel, 4 inches tall. It turns a beautiful rustic brown in time. 

Prices start at $150 for a 3ft size. The one in the picture is 8.5ft and $240. Large sizes utilize a bolt together design for easier transport.

Pad fill (gravel, sand) and installation not included.