avoid using metal bits or reamers that could enlarge the opening

OEM Engineering: Guaranteed electrical matching with Hi Delta heater components

Can I reuse the old gasket if it looks intact

4 million BTU/hr systems

The York S1-024-25006-701 Pressure Switch is a mission-critical safety component engineered for precise draft verification in gas-fired furnaces

Johnson Controls VG2231UM Valve THPU32HP7Y avoid using metal bits orThe Johnson Controls VG2231UM is a high performance 3 inch 2 way globe valve designed for precise HVAC flow control within commercial building automation systems. Engineered with a rugged cast iron body and durable brass trim, this ANSI Class 125 flanged valve is built to handle hot water, chilled water, and saturated steam applications up to 35 psig. Featuring a modified linear flow characteristic and an 83 Cv rating, the VG2231UM ensures accurate