This model of the Flexconsole is intended for use with a stainless steel thermal expansion tank. This will provide the same solid mounting and professional look as the original Flexconsole. When properly mounted on solid walls, or on a stud behind drywall, this Flexconsole is designed to hold a stainless steel thermal expansion tank with a volume of up to 7.6 US gallons. (Flexconsole USA Stainless Version Model #97976)