KOHLER K-9166-0 Bellwether 60-Inch x 32-Inch Single-Threshold Shower Base with Right Offset Drain, White Safeguard slip-resistant finish for added safety Single threshold for alcove installation with three tile-in flanges Recessed drain (can be used with K-9155 or K-9156 drain cover) Right offset drain for easy 60" x 30" bath replacement Ideal size for remodel installations into a 5-foot alcove with a shower door