Our traditional grate and frames are available in a range of sizes depending on the size you require. Hinged and lockable, these grates are a standard traditional style grate ready to be cast into the concrete. Our larger sizes are double hinged and have 2 grates to make it easier to open and access beneath the grate. Product Drawings Light Medium Heavy 300mm x 300mm N/A Drawing N/A 450mm x 450mm Drawing Drawing N/A 600mm x 600mm Drawing Drawing Drawing 900mm x 600mm Drawing Drawing Drawing 900mm x 900mm Drawing Drawing Drawing 1000mm x 1000mm Drawing Drawing Drawing 1200mm x 1200mm Drawing Drawing Drawing MaterialThis product is made from Hot Dip Galvanised Steel.It is suitable for exterior use and is typically used in exterior environments.Load RatingDepending on the size purchased and the duty selected depends on the load rating of the grate.Light Duty = supports pedestrian traffic only.Medium Duty = supports pedestrian traffic as well as cars and light trucks.Heavy Duty = supports pedestrian traffic, cars, light trucks and heavy trucks.