IAPMO Z124-17 covers plastic plumbing fixtures and specifies requirements for materials, construction,performance, testing, and markings. This Standard covers the following plumbing fixtures: (a) bathtubs and combination tub/showers; (b) lavatories; (c) shower bases and shower stalls; (d) sinks: (i) bar sinks; (ii) kitchen sinks; (iii) laundry sinks; and (iv) service sinks; (e) urinals; and (f) water closets.