Raypak 406A/407A Indoor Stack Kit (009841) topsides Once installed in the right

Once installed in the right US-spec system

Replacing a worn impeller helps restore full pump performance and improve overall circulation

Improves control

A tube bundle is useful because it forms a central part of the water-heating path

while the dustcover design helps protect the internal mechanism

Raypak 406A/407A Indoor Stack Kit (009841) topsides Once installed in the rightThe Raypak indoor stack kit is designed for compatible 406A and 407A heater applications where the supported venting setup for an indoor installation needs replacement or completion. A stack kit is useful because it helps create the intended connection between the heater and the indoor vent path, supporting cleaner exhaust handling and proper fit. This replacement is especially useful when the original venting components are incomplete, damaged, or no