The 4" OD Strainer with 3-3/8" Screw Holes from Braxton Harris is crafted from PVD stainless steel, ensuring exceptional durability and resistance to corrosion. This strainer is designed for efficient filtration in various plumbing applications, making it ideal for both residential and commercial use. The 4" outer diameter allows for easy integration into existing systems, while the strategically placed screw holes facilitate secure installation. This strainer meets industry standards for quality and performance, providing reliable filtration and protection for your plumbing systems.