Delta 38.25"x38.25" Bright White High Gloss Single Threshold Neo Angle Shower Base. Made of high impact polystyrene for strength and durability, it installs with wall set or tile application and fits the 38" Neo-Angle Shower Base TV# 245042 (not included). With a direct to stud installation, it ensures added security. IAPMO certified and backed by a limited 1-year warranty, this shower base offers both style and durability for your bathroom.