tarter farm and ranch equipment cattlemaster sweep system accessories alley panel with cut gate pen and includes a spring-loaded auto latch to lock the door closed and open-side version to match your sweep system system width description alley panel with cut gate item # apwcgr height length sapwcgr sliding alley gate mounted ball-bearing rollers for smooth operation and a spring-loaded auto latch to lock the door closed in the alley; also limits cattle's vision - helping to keep livestock calm height width item # scg team eicht width length length