A P-Trap is essential anti-odor plumbing fitting for bathroom wall-mounted wash basins and vanity sinks. We supply solid brass & stainless steel P-traps in 2 sizes (1 1/4", 1 1/2") with 4 decorative finishes. This guide covers its odor-block working principle, material comparison, size selection, easy installation and daily maintenance tips for residential & hotel engineering wholesale buyers. Read More