The block should be large enough to come behind the damaged wall area without reducing the size of the outlet opening.

Cut the outlet openings so they are vertically aligned.

To make the run, cut the outlet openings so they are vertically aligned.

Push a "backer block" made of scrap wood ( 3/4-inches thick and 2-inches wide by 3-inches high) through the outlet opening and hold it in place behind the wall.

Sponges constitute the phylum Porifera, and have been defined as sessile metazoans (multi-celled immobile animals) that have water intake and outlet openings connected by chambers lined with choanocytes, cells with whip-like flagella.