Yep, just need two on a 48" tank. the only drawback is how you will hang them. You can use a bent metal tube that attaches to the back of the stand and hang from that. Some people use plant hangers mounted on the wall behind the tank. Just have to be creative as they dont have any built in mounting for the tank.
180g- Mostly BIG fish and some coral. ~80g Nuvo- My coral tank with "happy fish"~ 90g- FOWLR Not the not happy type of fish~ 125g- Freshwater Malawi Cichlids ~10g- Nuvo- The refugees from the Ich of '18