No, it fits about 99% of electrical smart meters mounted on utility boxes. The glass portion of the smart meter will vary in size depending on the manufacturer. All smart meter mount to the utility box with a metal ring which is about 7 ¼ in diameter. The Smart Meter Guard actually mounts to the metal ring at the base of the smart meter, not the glass portion. That metal ring is the same size on all smart meters in the US and Canada. Also, the Smart Meter Guard does not fit water and gas smart meters. It was designed specifically for electrical smart meters. We make the Gas Meter Guard product to block RF emitted by smart water and gas meters.
Type 1 and 2:
Where the metal ring is visible on the outside of the utility box.
Type 3:
Where the metal ring at the base of the smart meter is covered by the metal lid of the utility box. Only about 4% of the utility boxes are Type 3. The Smart Meter Guard requires a rubber “spacer” to fit the Type 3 utility boxes. The spacer in included with every order.