AL6 ALB Part # Description Weight AL3 3' Access Ladder 10.0 lbs AL4 4' Access Ladder 13.0 lbs AL5 5' Access Ladder 16.0 lbs AL6 6' Access Ladder 21.0 lbs AL65 6' 5" Access Ladder 23.0 lbs ALB Access Ladder Bracket 3.0 lbs