which HRV filter do I need

Supercell compatible HRV filters come in two types.

1. Generation 1 F7 with pink media, this is for the older pre- 2014 steel fan box model tape is supplied for free with an online order. 
2. Generation 2 F8 with yellow media, this is for the newer post-2014 plastic fan box model.

• don't get confused with the names which identify how many fans or filters you need they apply to both GEN 1 & GEN 2 filters

1. Janus which means 1 fan system or 1 x filter 
2. Arizona which means 2 fan system or 2 filters
3. Phoenix which means 3 fan system or 3 filters
4. Rango which means 4 fan system or 4 filters

• Generation 1 filters are slightly larger than the Generation 2 filters so you can not use the wrong filter on the wrong system, infant the generation 1 filter will not fit the generation 2 system the generation 2 filter will be too small for the generation 1 leaving a 5mm gap.