を取り付けた

installed

→ を

phrase Rare #39,457

installed を marks the thing being installed or attached; 取り付けた is the past form of 取り付ける.

JA: 壁に新しい棚を取り付けた。

EN: I installed a new shelf on the wall.

I just installed it.

— RRR (2022)

He mounted a bookshelf on the wall.