The Janssens Louvered Window can be added to any Royal Victorian or Junior Victorian kit at the time of order. These come in Black. The window features 11 glass panels and an extra glass piece for underneath the window for Royal Victorian greenhouses. For Junior Victorian Greenhouses the lower panel will be Lexan instead. All standard Royal and Junior models already include one louvered window. You can add as many louvered windows as you want to your greenhouse with the caveat that you cannot put windows adjacent to each other - so 'every other panel' would be the most you can add. Auto-openers, frost covers, and fly screens are available. FEATURES Color: Black Frame Material: Aluminum Manual Operation Auto-opener (heat operated) available here Frost cover (Lexan panel) available here Fly Screen available here Made in Belgium by Janssens 15 Year Limited Warranty Financing Available WARRANTY 15 Year Limited Warranty