m) Exhaust Flue Outer Pipe with Kit# 946-563 Pipe Length N4 Rigid Pipe Adapter # 510-994 45° Elbow Inner Pipe Adapter with Kit# 946-563 Flex Liner Air Intake Co-Linear Flex Adapter with Kit# 946-563 Regency Horizon" HZ40E Gas Fireplace 29 EFTA00301448 INSTALLATION VERTICAL TERMINATIO