The aggregate series is the first image shown. With this you can get side openings with or without an urn for ashes, or you can just get one with a top opening. These items have capacities ranging from 15 to 45 gallons. No sand is required for the urns. The 38 gallon series uses a standard 32"W X 44"H trash bag. The top opening for the 38 gallon model can measure 9 1/2". Side openings on 38 gallon model are 13"W X 6"H. The 15 gallon version has side openings with measures of 9 1/2"W X 4 1/2"H. The recessed Panel series is shown in the second picture. The third picture is the Pentagon series. This series is also known as a fluted panel design. It also has a top opening of 9 1/2". Most styles come in both black and white.