The Pleated Screen System from LaCantina Doors provides an integrated screening option for retractable glass doors. According to the company, this is the largest single span screen system currently made.  A single screen can protect openings up to 15 feet wide while two screens provide double the protection from mosquitos and other pests. The pleated mesh design allows for huge horizontal spans and offers smooth operation. The screens come as an integrated component with LaCantina glass folding doors or as a retrofit kit for already installed systems[JL1]. LaCantina Doors, 888-221-0141,