131 Series Two Part Adjustable Slab Drain• Ideal for installations on a slab where a pan liner membrane is not required.• Available with high quality stainless steel strainer, Brass or Nickel fi cast grates for heavy traffi applications.• Drain base engineered as hub for 2" Sch. 40 pipe or solvent welds inside 3" Sch. 40 pipe.• Available with both round and square strainer top..