Just make a frame to set it on. Gluing some together would be best, but you could knock it apart and tap it together with a rubber mallet.
https://www.amazon.com/letsFix-Fittings-3-Way-Elbow-Connectors/dp/B0834PB7BP/ref=sr_1_8?dchild=1&keywords=3+way+pvc&qid=1611236249&sr=8-8
https://www.amazon.com/letsFix-Fittings-3-Way-Elbow-Connectors/dp/B0834PB7BP/ref=sr_1_8?dchild=1&keywords=3+way+pvc&qid=1611236249&sr=8-8