Willoughby’s Aquasurf AS-S3636ADA rear trench shower base is ADA-compliant and features a stainless-steel integral trench drain at the rear of the shower base that makes ingress and egress even easier for people with mobility concerns. The shower base is available with a left, right or center drain position to help avoid structural beams. Featuring granite with a nonporous surface that is resistant to stains, burns and impact, the shower base is an ideal solution for health-care environments.