Miller DuraHoist Confined Space 1-Piece Adjustable Mast
Compatible with any ONE Lower Mast Extensions In other words, this upper mast can be used with ONE lower mast only. Overall mast height adjusts from 74 inches to 89 inches. Mast offset adjusts from 12 inches to 29 inches.
Height range on the DH-3 mast is74" to 89". This is suitable for most normal applications. If short height is needed due to overhead restrictions, use the DH-21.