The Toyotomi 20479880 is a genuine Installation Hardware Kit for OM-22, OM-23. Hardware kit with the screws, anchors, and fasteners needed to install an Oil Miser OM-22 or OM-23 direct vent heater.
This is an OEM Toyotomi part, so it fits and performs the way the original did. Confirm your heater model before ordering; the model is on the rating label on the unit. If you are not sure which part you need, Rural Energy support can check it against your model and serial number.
This part is special order. Rural Energy does not keep it on the shelf but can order it from Toyotomi for you. Contact Rural Energy for current lead time before you plan the repair.