Selkirk 3"/4" 45 Degree Elbow (Pellet Vent - UPP - Type L / PL) btu265000 Why is the efficiency as

Why is the efficiency as per the EPA’s test data smaller than the publicized optimum efficiency

122IL with Decorative Box

Seat Back: 23

Please Note: Product images shown with lava rock and fire pit logs (Not Included)

The large Gas Outdoor Fire Column by Endless Summer features a rustic

Selkirk 3"/4" 45 Degree Elbow (Pellet Vent - UPP - Type L / PL) btu265000 Why is the efficiency asSelkirk 3" 4" 45 Degree Elbow (Ultimate Pellet Pipe Type L PL) Used as an offset around an obstruction. Can be used as a termination when accompanied by a screen cap (UPP 45T). Painted black or unpainted. Pellet Vent UPP Type L PL The superior silicone gasket technology seals the system and provides a leak free connection. Easy to assemble for safe and secure connection. Easy to disassemble for inspection and cleaning. Laser welded inner and outer