Your standard wall, now with electrical wires and junctions and stuff! Everything's cooler when you stick a fuse box on it.
Fuse Box price in Growtopia: sells for about 1 WL (median of 5 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: GUWL, VURTAG, JEPF, 07P