HEAVY DUTY & STURDY: Made from durable Ductile Iron, this metal drain grate is stronger than cast iron and has similar performance to steel. The outdoor drain grate will last for years without deteriorating, providing long-lasting durability for your drainage system MORE CARRYING CAPACITY: The back of this outdoor drain grate is strengthened to provide additional support and carrying capacity. This ensures that the drain grate is strong enough to withstand more pressure and won't easily damage or bend. With its increased carrying capacity, you can trust this driveway drain cover to effectively manage heavy flows of surface water DENSE HOLLOW DESIGN: The holes on this trench drainage grate are dense and reasonably sized, allowing for quick and efficient drainage without clogging. The dense hollow design effectively blocks leaves and debris from entering and clogging your drainage system, protecting it from damage and ensuring smooth water flow MULTIPLE USAGE SCENARIOS: This large drain grate is versatile and can be used in various scenarios. It is easy to install, making it suitable for installation in parking lots, yards, gardens, channels, garages, and landscaped areas.