- The difference between the AL1, AL2 and AL3 Mast Systems is the OD (Outside Diameter) and wall thickness of the center mast poles.
- The AL1 and AL2 Center Mast Poles both have a 2 inch OD, but the AL2 Center Mast Poles are 2x the wall thickness and can support more deployable weight than the AL1 Center Mast Poles.
- The AL3 Center Mast Poles have a 3.5 Inch OD and can support the heaviest deployable payloads of all BlueSky Mast Systems.
- Visit our Mast System Overview page to find out which system is right for you.