It is a drop-in replacement part that requires a 4mm hex wrench for installation

While it produces 3500W at 240V

What is the typical microamp range for this sensor

As a primary limit switch

Does this gasket require additional RTV or sealant

Utica-Dunkirk 40300004 Fire Door 30067439-890 It is a drop-in replacementThe Utica Dunkirk 40300004 Fire Door is a critical replacement component engineered for specific boiler configurations within the ECR International family. Designed to withstand extreme combustion chamber temperatures, this cast iron access door ensures a precise airtight seal, maintaining optimal pressure and preventing heat loss. As a direct OEM replacement part, it is essential for maintaining the structural integrity of the burner mounting area.