Name: Four Seasons Sunrooms. Descripton:We are an authorized franchise for Four Seasons Sunrooms. Four Seasons is the largest manufacturer in the world with over 16 models to choose from, all with a lifetime guarantee. We have been licensed contractors since 1992 and we specialize in doing residential additions on homes using the Four Seasons product line. We also carry Harvia Saunas, replacement windows, custom doors, awnings, pergolas.