The massive vent supplies ample airflow with out impacting the structural integrity of the shelter. Powder coated, baked on finish for rust and corrosion resistance. a : a slight composition built for shelter or storage Particularly : an individual-storied making with a number of sides unenclosed b : a setting https://4x8-shed-kit10864.wikicorrespondence.com/3748595/shed_4x10_an_overview