HEAVY DUTY & STURDY: This metal drain grate is made from durable Ductile Iron, which is stronger than cast iron and has similar performance to steel. This outdoor drain grate will last for years without deteriorating MORE CARRYING CAPACITY: The back of drainage grates outdoor is strengthening. So it is strong enough to withstand more pressure and won't easily damage. This will keep you more secure when using this driveway drain cover MULTIPLE USAGE SCENARIOS: An effective drainage system starts at the top. The large drain grate is easy to install. The garage drain cover can drain away heavy flows of surface water from parking lots, yard, garden, channel, garage and landscaped areas RUST-RESISTANT DUCTILE IRON: Unlike regular iron, ductile iron placed outdoors undergoes a normal oxidation process. Once the oxidation layer forms on the surface, it acts as a protective barrier and prevents further rusting. This means that the ductile iron drain grate will not rust like regular iron, ensuring its longevity and performance. Say goodbye to layers of peeling rust with this rust-resistant ductile iron drain grate Metal drainage grate boasts excellent weather resistance. It won’t fade or age even when exposed to direct sunlight or humid environments for a long time. With a service life far exceeding plastic products, its robust anti-aging performance ensures worry-free use for years. Load Rating B Class: Suitable for Light Vehicle Traffic. Applicable Traffic/Vehicles: Passenger cars, SUVs, light vans, small trucks. Speed Limit: ≤5 km/h (safe for low-speed light-duty vehicle passage)

Cast iron drain grate installation method:

1, According to the design of the rainwater mouth size, choose the appropriate drain grate. 

2, According to the thickness of the rainwater grate and rainwater grate top surface, determine the rainwater mouth masonry brick top surface elevation. 

3, Check the rainwater mouth top surface elevation no problem, sprinkle water on the bottom surface wet, with cement mortar in the need to install the drain grate position sitting 0.8 inches thick mortar, and then place the grate base, base inside edge to use mortar wipe. Installation must keep the base flat, grate base as a whole on the ground, solid and no loose. 

4, Install the drain grate, and around the grate base with cement mortar pouring. 

5, In order to maintain the appearance of the drain grate beautiful, clear lettering pattern, pay attention to protect the surface of the drain grate when pouring cement, so as not to stain, can not be cleaned. 

6, Timely open the grate for cleaning to avoid mortar pouring the water grate and well seat into one, so as not to affect the future opening.