Window with built-in ventilator - Internorm KV-440 - any other options?

[JCB400]

Does anybody know of any windows with a heat recovery ventilator built into the frame please?

 

I am looking at the Internorm KV-440 with I-tec IV40 ventilator - any other options?

 

I'm aware of the separate through the wall units which are available - I'm particularly looking for a window frame unit. A whole-house MVHR is not an option.

 

Thanks.