Benches

Wire mesh bench:  galvanized steel wire welded. the standard hole size is 1.18"*5.12", 2"*2" etc.  tailor-made wire mesh hole size and steel wire gauge is available. 

Expanded metal bench:  more heavy load.  holes and mesh gauge is optional too.

Ebb & Flow bench: suitable for pot and tray growing. water supply and drainage may go through one end quick valve, also may separate supply and drainage pipe.   this system easily to recylce water.