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ROY E. CALVIN, AIA ARCHITEC'T' <br />July 26, 1973 <br />ifr. .l�.im Johnson <br />31t Racl:ground t�lusic <br />Commercial Sound Systems <br />4003 Stone. [Jay NorCh <br />Seattic, l+�ashington 981Q8 <br />Re: Speaker S��stem <br />�:verer.t ifall <br />fiverel'C, Washington <br />Dear Alr. Jolinson: <br />�% C;,:: _. <br />i <br />In regard to your suUmiCCal. of Che Pour:jay industrial speaker <br />box whidt you propose to use to provide a one-hour proCection <br />Lor the speaker opening, please Ue advised of. the following: <br />l. The UL rating for the Pourjay �peaker Uox <br />is for Group I, self-extinguish?.ng maCeri.al., <br />noC a one-hour rating, as we c�:�not find any <br />reference in our UL catalog. As Co our require- <br />ment for a one-l�our openin� protection, these <br />requi_remenCs are stipulal'ed by the Washi.ngton <br />Survey & Rati.ng Ilureau aud l'l�e local Uuilding <br />i.nspection department. If you can obtai.n the <br />Che ahove agencies' approval of the Pourjay <br />spealcer Uox to provid� a one-haur protection for <br />speaker openings, please submit the aUove <br />a�encies' approval anc' we wil]. so advise 7'he <br />Ilanson.DevelopmenC Company that the spealcer <br />enclosures are approved. <br />Very truly yours, <br />ROY E. CP.LVIJN, P.IA ARC11I . T <br />�y.."'�.. •' . <br />Carrol P•.. LiCtl.ejo�in <br />Ar.cnitect <br />cr:�.: dm <br />cc: ?ir. Jack Chesbro <br />Alr. Bob Ptoore <br />Hr. Dudley L. Ptorriy <br />bcc: Pfr. John Farrens ✓F <br />,i <br />.IiwM. � .�i <br />i. <br />�� :A � � �' <br />313 SOUTH MARKFT <br />WICHITA, KANSAS 6]202 <br />PHONE (316) 265�BSB4 <br />�0 �C���d�� <br />JUL 3 0 1913 <br />CITY OF EVERETT <br />Inspection Dept. <br />