For use with Great Basin™ model GB-250 and Billy Goat™ model SI-250 in SUSPENDED INSTALLATIONS ONLY. Suspended installations are typically used with a riser that penetrates the floor above. In these situations Above Grade Support Kit model AGS1 is required to maintain a proper seal of the risers on the neck of the tank. Features: Zinc Plated Steel All Thread Rod Powder Coated Strut Channel Support (x3)