The Low Profile Strainer 1.5" Thread is designed to thread directly into a 1.5" internally threaded bulkhead, extending only a fraction of an inch past the fitting for a sleek, low-profile appearance. Its compact design effectively prevents fish, snails, and other aquarium inhabitants from being pulled into plumbing, sumps, or pumps, helping to protect your equipment and livestock. Ideal for tight spaces and clean installations, this threaded strainer is a reliable solution for maintaining safe and efficient water flow in reef and freshwater systems.