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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
Optimized Heat Transfer: The 29-degree pitch is calibrated to move the necessary CFM to maintain head pressures within manufacturer specifications
and E versions
Once the AEGIS SGR-42-UKIT is secured
Technicians recommend inspection if the safety valve is leaking
Enhanced Durability: Equipped with ball bearings for reduced friction and extended service life in vertical or horizontal orientations
Lennox 73M72 Extension Kit 322838-754 Optimized Heat Transfer: The 29-degreeThe Lennox 73M72 is a critical Vertical Vent Extension Kit specifically engineered to modify the venting system on compatible high efficiency furnaces and SG 150 units. When standard flue runs aren't enough to clear building obstructions or meet local code for roof terminations, this OEM replacement part provides the necessary height for proper exhaust gas routing. For a tech in the field, this kit is essential for maintaining the correct 1 4 inch per