Raypak 009841 Indoor Stack Kit (Drafthood), 9" Vent, for 406A, 407A and 408A Heaters

Raypak 009841 Indoor Stack Kit, 9" Vent

Part # 009841 | Genuine Raypak accessory | For 406A, 407A and 408A pool and spa heaters installed indoors

This is the indoor drafthood for Raypak 406A, 407A and 408A gas pool and spa heaters; Raypak's manuals call it the indoor stack kit. It connects the heater to a vent pipe so the flue gases are carried out of the building. These heaters come with the outdoor stackless top only and Raypak lists the indoor stack as optional equipment, so an indoor installation needs this kit ordered separately.

✅ Fits these Raypak models:

• Raypak 406A digital (electronic ignition) heaters
• Raypak 407A digital Low NOx heaters (Raypak dates the residential 407A to 2004 through 2023)
• Raypak 408A Professional Series heaters
• Raypak 406A millivolt heaters (built 2004 to 2020), and the model 399 that shares the 406A column in Raypak's parts list
• Other cabinet sizes take a different kit: 009838 for the 206A and 207A, 009839 for the 266A and 267A, 009840 for the 336A and 337A
• Not for the earlier RP2100 heaters (R405A and R405B, built 1998 to 2004): Raypak lists indoor stack kit 006699 for those

🔧 Details:

• In the box, per Raypak: 1 unpainted drafthood, 1 adapter plate, 3 mounting brackets (clips), 3 screws and the instructions
• Vent outlet (flue) diameter: 9 in. (229 mm)
• Overall height with the indoor drafthood in Raypak's dimension tables: 64-9/16 in. (1640 mm) on the 406A and 408A, 58-1/2 in. (1486 mm) on the 407A
• Drafthood shipping weight listed by Raypak: 21 lb (9.5 kg)
• Raypak's contents list for the kit has no vent pipe or vent cap

📌 Good to know:

• Raypak calls for a Category I vent on the drafthood, recommends Type B double-wall pipe the same size as the drafthood outlet, and requires at least 5 ft of vertical vent above the outlet.
• An indoor heater also needs combustion and ventilation air openings; the heater manual gives the minimum sizes.
• Where the vent has to run through a side wall, Raypak offers the D-2 Power Vent for electronic-ignition heaters instead of this drafthood.
• Venting a gas heater is work for a qualified installer, following the heater manual and local code.

Check your heater's model and serial number before ordering.