Fits the following vanEE  air exchangers:

60H HRV  (41600 – 41602) . . . .  60H ERV (41604 – 41606) 60H+ HRV (41650 – 41652) . . . .  60H+ ERV (41654 – 41656)

Fits the following Venmar AVS  air exchangers:

C12 HRV (41550 – 41552) . . . . . C12 ERV (41554 – 41556) Constructo 1.0 HRV (41500 – 41502) serial number starts with BA or BB Constructo 1.0 ERV (41504 – 41506) serial number starts with BC or BD