Gable Vents are a functional additional to the roof of a home. Gable Vents allow heat to escape in the summer and prevent the formation of condensation during the winter. Ply Gem Shutters and Accents Gable Vents are available in round, square, octagonal, half-round and rectangular sizes in a myriad of colors to accentuate or match your siding. Utility Vents allow for proper airflow in a specific area of the home. Utility Vents are available for garages, foundations, range hoods, dryer vents, bathroom exhaust fans, furnaces, fire-places and soffit. Ply Gem Shutters and Accents offers a variety of Utility Vents in over 500 colors.