Home Crossarms Hollow Steel Crossarm, 4″ x 4″ x 90″L Hollow Steel Crossarm, 4″ x 4″ x 90″L Frontier Part Number: 401HSC76 NOTES: HOT DIPPED GALVANIZED PER CSA G164 & ASTM A153 HOLLOW SECTION & STRUCTURAL STEEL CHANNEL PER CSA-S16 & G40.21 0.86″ DIAMETER PRE-DRILLED HOLES 90″ (7.5′)L X 4″ X 4″ DOWNLOAD PDF DRAWING