- The document discusses Ply Gem Holdings' second quarter and first half 2017 results. It provides an overview of net sales, gross profit, operating earnings, adjusted EBITDA, and end market exposure for Q2 and the first half of 2017. Key highlights include year-over-year sales growth driven by increased demand and favorable pricing in the US and Canada. Gross margins declined slightly due to higher commodity costs, which were partially offset by price increases. Adjusted EBITDA increased compared to the prior year periods.