This elbow set allows mounting of the Sterling GG heater at a 45 degree angle when venting horizontally with the concentric vent kit. It includes a stainless steel category III 45 degree elbow for the exhaust and an adjustable galvanized elbow for the combustion (inlet) air.

Sterling GG30, GG45, GG60, and GG75 use 4" elbows.
Sterling GG90, GG105, and GG120 use 5" elbows.

Item # 46, 4610147, 4610157