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..� �� <br />� <br />J�47�t1 � /�i�H Ct?PWfi7D�'It;G, l;�u, <br />4ctober 12t�', 2015 <br />To Whom It May Concer�7: <br />This letter is mear�t to clarify a concem �•egai•ding the ra:��e and d�yer exilaust vei�t <br />materials installed at the SiIver Lake Center townhomes built by Polygon Hon�es <br />Northwest. Specifically, the plan "E3" townhomes in buildings 3, 6, 7, 8, 9, 10, 18, 19, <br />and 20. After having a representative of Bob's Heating perform a physicai inspection of <br />a11 F.,3 plan units ii� these buildings,lve cari confirm these installations have been <br />compteted using 30 gauge solid rnetal duct for the range exhausts, and 28 gauge solid <br />metal duct fox the dryer exhausts in accordance �vit11 chapter 1 ��f the 2012 Internaiio�lal <br />Residential Code, <br />Sil�cerely, <br />;'; � <br />�f � <br />Ryan Strom <br />Mechanical Ei�gineer <br />Bob's Heating and Aix Condiiioning, inc. <br />