Document YGe2vGKpg5yxexkvv7dd3q9EN

February 12, 1965 IMPORTANT FIRBCODE V TEST U.S.G. MOVES AHEAD! Assembly: 2 Hours 3 Hours H. H. Robertson - UKX & Section 3 (blend system) (UKX - 3/8" thickness (Section 3 - e^ Bottom of fluted sections - 3/8" thickness ( b) Top of fluted sections - 1/2" thickness ( c) Trench Header Ducts - Additional 3/8" thick ness (Beam - 3/4" thickness With the successful completion of this t^st, U.S.G. moves ahead of Zonolite's Monokote, who require a 1/2" contour thickness for a 2 hour flat and fluted (blend system) rating. In addition to this, we have acquired a 3/4" - 3 hour beam. Ur until now, both U.S.G. and Zonolite had required 1" thicknesses for a 3 hour rating. The 3 hour beam with 3/4" thickness is significant throughout the U.S. The 2 hour floor is particularly significant in areas which require it, but where ve had not had such a rating. As has been stated previously, copies of tests will not be available for several months after any particular test has been conducted. However, any code body or building official can obtain a letter of certification by simply writing to and requesting it from U.L. The descriptive design number assigned to this test is: U.L. Design 229 - 2 hour (beam 3 hours). Take advantage of this competitive situation now and remember the 4 for 1 "bonus" credit you will receive! TEE:jb T. E. Eckland Ass*t, Manager Plastering Materials nn o o UJ a K> -J V*! BB006 L97L DISTRIBtmoy : This letter sent tc ell District, Division tnd Regions! Managers, all General Line, Job and Plastering Material Salesmen (U.S.A. Dealer Sales except Paint and Insulation Districts); copies to Messrs. G. J. Morgan, A. J. Watt, E. V. Duffy, E. L. Busch, C. 0. Putterer, E. R. Stainback, R. E. Chandlerr R. B. fisher, E. E. Ellvood (50 copies), F. M. Thorman (30 copies), R. C. Gimlin, R. J. Day, R. E. Underjood, G. V. Lane, L. M. Rockett, H. G. Williams, V. J. L. Steele, W. J. McIntyre, H. W, Jarvis, J. A. Preib, C. O'Donnell (5 copies), C. M. Lambe, B. V. Nies (6 copies), K. S. Freeman (5 copies), and all Mason Supply Department Personnel. 1 0055 O o O' sO -J (V GP003 0276