The Whale Side Entry Strainer with Non-Return Valve SB4222 is a high-quality boat part manufactured in Ireland by Whale. This strainer features a 1" or 1.5" hose connect, making it versatile for various boat models and sizes. The non-return valve ensures a one-way flow, preventing water from re-entering the boat's system and causing potential issues. Designed by Whale, this product adheres to the standards of excellence in marine parts and accessories, making it a reliable choice for boat owners and enthusiasts.