Grating/Expanded

Grating is a framework of parallel bars or slats, typically made metal or plastic, that allows, air, and water to pass through providing support and safety. It is commonly used in flooring and drainage systems.

Expanded metal is a metal mesh created by cutting and stretching a sheet, resulting in diamond-shaped openings. This material is often used in construction, security fencing, and walkways, valued for its strength and versatility.