DIY fly screens keep insects out whilst allowing fresh air in. This is the pull down narrow version perfect for slim windows.
Retractable Insect Screens - Insolroll
Roller Blind handle for Fly Screen by gsohler, Download free STL model
33 Best Window Fly Screens ideas
Retractable Bug Screen 47 in. x 67 in. Adjustable Width/Height White Aluminum Fiberglass Vertically Retractable Window Insect Screen/Frame ZV05012017016 - The Home Depot
FLYZZZ Adjustable Window Screen Small Expandable Window Screens, Miny Replacement Window Screen (9.84'' High by 14-24'' Wide, B) 2 Packs
FLYZZZ Adjustable Window Screen Small Expandable Window Screens, Miny Replacement Window Screen (9.84'' High by 14-24'' Wide, B) 2 Packs
33 Best Window Fly Screens ideas
Hidden & Retractable Window Screens
Buy Retractable Window Fly Screens Online