Tile Redi’s Bathtub Replacement…Go Tubless shower pans have been created to fit the footprint of the bathtub and replaced with a shower. The shower pans come in more than 20 linear trench drain models, multiple Wonder Drain models, as well as more than 60 standard models with a variety of sizes and drain locations. Because every bathroom design is different, a variety of entrances are offered including: Single Curb, Double Curb, Triple Curb and Barrier Free. These products are leak-proof, easy to install and affordable.