Home / Agriculture / Hydroponic Square Pot Hydroponic Square Pot A bigger pot to be used together with 4″ X 2″ Rectangular Pipe with 6″ Gap or 8″ Gap. Suitable for 4″ X 2″ Rectangular Pipe: 6″ Gap & 8″ Gap Related products 4″ X 2″ Open Trunking Pipe End Cap With Outlet Plant Shading Net 2 Way Super Punch Spanner Hydroponic 4″ X 2″ Rectangular Pipe Socket U-Bolt Soil Plug Micro Tubing