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_ �� �,: <br />� �� <br />� <br />� �` � {" <br />� �� a� <br />�= <br />NEAi1NG 9/6PR G`�tr'D�ID1�IlV{t, It�C. <br />i�l;i0�7ti;i' �t)th�2,�.1� <br />To Whom It May Concern: <br />This letter is meant to clai�ify a coalcern rega�•ciin� the range ai�d dryer exhaust vent <br />materials installed at the Siiver Lake Center townhomes �uilt by Polygon Hoines <br />Narth��vest. Specifically, the plan "F1 anct E3" townilomes in l�uildings 3, 6, 7, 8, 9, 10, <br />18, 14, and 2Q. �fter having a rcpreser�tative of Bob's I-Ieating perlarm <i physical <br />inspecfiol� of all E1 �iid E3 plan units in these buildizigs, we can confirm these <br />installatiozls l�ave been compieted using 30 gauge solid metal duct tor the r�ai�;e exhausts, <br />and 28 gauge solid metal duct for the dryer exhausts in accordance with cliapter 15 of the <br />2012 Iniernational Residential Code. <br />Sincerely, <br />Ryan Stroln <br />Mechanical Engineer <br />Bob's Heating and Ai.r Conditio�iing, in.c. <br />