Retractable Screen For Window Expansion Fastening System

Individually adjustable, easy toinstall  by getting caught in thewindow-jamb, not a drill at the window frame --High quality alloy aluminum frame --Effective seal burst into the aluminumguide rails and roller blind cassette --Insect tissue from high qualityfiberglass, UV-resistant, washable, durable and abrasion resistant --DIYinstalling without drilling, using only an allen wrench