<div dir="ltr">Dear Experts, <div><br></div><div>Hi,</div><div><br></div><div>I am trying to find the location of type 667c, I have found the type 667, Type 667b, and type 667d. But despite so much search, cannot find the type 667.</div><div><br></div><div>Type 667 is air to air heat recovery device.</div><div><br></div><div>Your help in this regard shall be highly appreciated.</div><div><br></div><div>Best Regards,</div><div>Yours Sincerely,</div><div>Muhammad Tauseef Nasir</div><div>PhD Student,</div><div>Department of Building Service Engineering,</div><div>Hong Kong Polytechnic University.</div></div><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br>
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