CorGal tanks are available without a roof for those applications that do not need to protect the stored product from the sun. The no roof or open top tank consists of corrugated galvanized steel wall sheets only. The no roof tanks are equipped with a geotextile preliner and a flexible membrane main liner for water containment and these tanks are pre-engineered for water containment only.
An exterior wind support ring is provided for 21′ diameter models and larger.
All tanks having 2 rings (models XX02) or taller have a removable side access panel that is used for interior tank access during construction or for emergency access.