Case Study Havana CUSD #126 501 S McKinley St. Havana, IL 62644 Contact: Mark Twomey, Superintendent 309-543-3384 Background The two story, 74,972 square foot high school building was originally constructed in 1960, with additions in 1964 and 2000. The existing single pane windows were partially covered with wood paneling (no insulation). The paneling of the windows was intended to reduce drafts. The R-Value that the paneling provided

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