Not odd, just interesting. Because they all use the same box, they don't require individual certification? We're just waiting for a Chinook with a different exterior? Just curious, that's all.
Yes, look at the PE stoves are the same way. Same firebox only requires the one certification it appears.
Vista Series C, Vista Classic, Vista Artisan, Vista Insert, and Alderlea T4
Alderlea, Super 27 Design D, Spectrum, Step D1
Standard, Pacific Ins, Spectrum Classic and Fusion, ALT5INS
Summit Series A, Summit Insert, Summit Classic and Alderlea T6