This heavy duty, completely reversible crowding system includes a 135 degree sweep with a 20’ working alley. Whether you plan to use this as part of a permanent installation or as a portable working corral, the RSOS-4 helps reduce the labor needed for working cattle. This system includes a “no-back” alley stop. With no tools, the “no-back” Alley Stop can be easily adjusted to prevent cattle from backing out of the alley. This system is constructed from our heaviest, most durable panels, Priefert Rough Stock Panels, to ensure that it can handle even the rankest cattle. The Architectural Grade Powder Coat Finish helps the product to resist rust, scratches, and fading to add years of life to your investment.