“When you’re this tough, they call you SIR…” 22.25″ x 17.25″ x 17.75″H High Density Polyethylene Introducing, the revolutionary SIR series of Curbside Containers. The SIR series is designed to be the most durable container available. Curbside containers have certain impact and stress points. Primarily the handle and the bottom and top endges or corners. SIR containers incorporate STRATEGICALLY INTEGRATED REINFORCEMENTS which makes the SIR “The toughest container at the curb”.