You must mount all fire extinguishers on the wall by a hanger or bracket. The top of all extinguishers must be no higher than five feet above the floor and the bottom at least four inches above the floor or any other surface. If a state or local fire marshal or the manufacturer's instructions has different mounting instructions, you must follow those instructions. All fire extinguishers must be readily available for immediate use by household members and caregivers.
26 Tex. Admin. Code § 747.5105