Render VFX Graph Output Mesh Particle on both sides

I'm experimenting with VFX graphs and I have two simple quads on x and z axis. The whole thing works well but I would like to be able to see my particle wherever I am in the scene, i.e. render it on both sides independently of the side I am looking from. I tried to do it by modifying my mesh and it works fine but it takes two times more space on disk while I could do it from code directly. I'm looking for something similar to the two-sided checkbox in shader graphs, but I can't find a way to do it, as VFX graphs only take VFX Shader Graph shaders as input, and those do not have the two-sided option (or I didn't find it).