This document summarizes an engagement to analyze a subcontract dispute between Gundlach Sheet Metal Works and Brush Wellman Inc. over a ductwork project. It finds that Brush Wellman unreasonably rejected Gundlach's materials, methods, and submittals, breaching the agreement and preventing Gundlach from performing the contract. As a result, Gundlach incurred significant additional costs and delays. The analysis concludes Gundlach's claim for over $1 million in damages is justified and sustainable.