Midget VentsStainless steel (304). Available in two different sizes.Stock LevelIn StockSKUP-10A-81360DescriptionAdditionalDescription10A-81360 - Stamped SS vent 41 x 41mm10A-81370 - Stamped SS vent 57 x 54mmAdditionalOptions41 x 41mm, 57 x 54mm