This product is built from stainless steel with a thickness of 1 mm, offering greater strength than brass. It is a 4 inch outside diameter shower drain grate designed for durability and long service life. Key specifications - Material and strength: 1 mm thick stainless steel, stronger than brass - Outside diameter: 4 inches - Center-to-center screw hole spacing: 3-3/8 inches - Installation hardware included: 2 guide screws (13 mm long) and 2 machine screws (8 mm long) - Finish: Sleek and sustainable oil-lubricated bronze coating Why you need it - Durable and corrosion resistant for long-term bathroom use - Precise mounting with center-to-center hole spacing of 3-3/8 inches ensures secure fit - Complete installation package includes all necessary fasteners for a straightforward setup - Bronze coating provides a refined appearance while maintaining performance Compatibility and applications - Suitable for 4" shower drains that use center-to-center mounting holes spaced at 3-3/8 inches - Ideal for replacing an existing drain grate or installing in a new shower installation - Works well in residential bathrooms, bathrooms undergoing renovation, or spa-style showers where a premium finish is desired Use scenarios - Replacing an old brass drain grate in a 4" shower to upgrade to stainless steel with a bronze coating - Installing in a new shower where a durable 4" grate with precise mounting hole spacing is required - Upgrading a renovated bathroom to a sleek, water-resistant grate that combines form and function Performance and longevity - Stainless steel construction resists corrosion and wear in wet bathroom environments - 1 mm thickness provides sturdiness without excessive bulk - Bronze coating delivers an attractive finish while supporting durability and sustainability Note - For correct fit, ensure your drain matches a 4 inch outside diameter with center-to-center mounting holes of 3-3/8 inches. The included screws simplify alignment and installation.