Nov 07 (Reuters) - Installed Building Products Q3 pretax profit USD 93.9 million vs. IBES estimate USD 105.7 million. * Q3 operating income USD 101.3 million vs. IBES estimate USD 113 million * Q3 gross profit USD 256.8 million * Q3 net income USD 68.6 million vs. IBES estimate USD 85.7 million