When Tarter designers set out to make the best and most versatile system on the market, they started with several clear objectives. Make it rugged, make it versatile, make it easy to assemble and use, make it affordable, and make it work every single time. The result? An alley and sweep system like no other on the market. And now these units dominate the market! Both the open and sheeted systems are fully reversible and can be configured in 6 different setups. Straight lead-in setups include a 10′ alley. For a 20′ alley on a straight lead-in configuration, one additional alley panel (SAP10 or SSAP10) and one additional bow (AAA2) must be purchased.