Char-Broil Commercial 463242715 (and 463242716) is a TRU-Infrared 4-main Home Depot cart. Tubes are G466-2500-W1 class: about 14-3/4” × 5/8”. They sit under emitter plates, not under Performance 17” tents. Do not install Performance burner kits here.
Also common: 463257520, 463276016 — same IR 4-main family if the plate and tape agree. Find the 463- string.
Procedure
Photograph the full 463- model, including the last three digits. 463242515 is a 3-burner kit.
Tank off. Cast grates and 17” emitters out. Note how tubes pin and how carryovers clip.
Pull cotters. Slide 5/8” inlets off orifices. 1” Nexgrill tubes will not swallow this brass.
Sky-check. IR boxes still flash back if the inlet is short of the orifice.
Dry-fit four 14-3/4” × 5/8” tubes. Carryovers on this family are often adjustable 5–7.8”.
Pin rears. Electrodes if they unclipped. Emitters back — they must sit flat. Over-tall tents from a convective kit will teeter the emitters.
Tank on slowly. Soap. Lid open. Light each main, then the side burner if equipped.