We manufacture drywells ranging from 750mm (30") to 1220mm (48") inside diameter. The 750mm ID (27 holes) and the 1220mm ID (100 holes) are manufactured with interlocking tongue and groove and will withstand an H20 wheel load. The 100 Hole Model (1220mm ID) is most commonly utilized for commercial applications and is compliant with most municipal standards, while the balance of the models are most commonly used in residential and rural installations. All drywells may be configured with an upstream catch basin or may be set up as a top drain system. The lids are therefore manufactured with removable plugs, or round and rectangular openings for frames, grates, and covers to suit any need that may arise.