This weldless Triclover guard kit for 2200W heat elements allow you to install the heat elements with triclove fitting thus it will make it easier to take off the heat elements from boiler for cleaning or exchange.
To install the guard kit, you need drill a 48mm holes on the boiler, so make sure you got the correct saw.
The kit come with weldless 2″ bulk head and a cover plates with 48mm holes and seals.