



The frame keeps the mesh taut and seats it leak-tight. Frame material and strainer layer are selected separately — the same product can be round, multi-layer and framed; those are features, not extra categories.
Preferred where weight and heat transfer matter. Gasket pocket and bolt holes are machined to drawing.
On corrosive and high-temperature lines the frame is 304 / 316 as well. Weld and machining are coordinated in the same plant.
Single-layer straining or spot-welded stacks can both be fixed in a frame. Made to size and drawing.