Insect screens from National Screens perfect for alfresco lifestyle 
There is an insect screen solution that works with any bi fold door system, no matter what brand hardware you choose to use. Monarch Plus provides you and your family protection from insect as well safe access in out of the room. Our patented screen retention system resists mesh blow out so you can truly enjoying cool breezes without unwanted insects. There are no unsightly or dangerous channels fitted to the floor for you to trip over. When the screen is opened the mesh floor guide is retracted leaving a clear opening for you to walk though. Monarch Plus Retractable Insect Screen for Bi-Fold Doors
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