Abstract: A security screen employs frame rails 11, as an extrusion of constant cross-section and having a rectangular hollow space 18 and a screen entry opening 19 opposite the hollow section 18. The rail 11 leads from the screen entry opening 19 outboard as a form of channel 20. The channel 20 has three regions comprising a screen tensioning region 21, a glue receiving region 22 and a seal or cover strip receiving region 23. The first step in assembly is to caulk or otherwise deposit a suitable glue, for example a methacrylate, epoxy, urethane or equivalent to fill the glue region 22. The screen is inserted through the glue, the frame promoting movement of the glue into the screen so that the glue hardens to form a matrix around and through the screen.

Abstract: A frame assembly is made up of a number of strips and a frame member, which has a channel defined by side walls and a bottom wall. A first strip located in the channel has a terminal end section defined by a return flange so that the terminal end section surrounds the peripheral edge of a rigid stainless-steel screen. The wall has projections and recesses which cooperate with respective recesses and projections in the first strip to position the first strip and inhibit its removal. A locking strip and the wall have cooperating oppositely directed teeth to drive the locking strip into position and prevent its removal without destroying the teeth. Both strips have a screen contact region made up of ridges. The first strip is made from soft PVC while the second strip is made from rigid PVC or a co-extrusion being softer on the screen contact side.