6600 series extra heavy duty fiberglass 2-way step ladder. Meets or exceeds CSA Grade 1A, ANSI Type 1A. Durable non-conductive “C” channel side rails in high visibility safety yellow. Wide aluminum top with extra-thick brackets for strength and durability. Wide 3 inch slip-resistant serrated aluminum steps for safe climbing. Inside spreader arms complete with “wrap-around” sleeves that strengthen spreader-to-rail connection and protect spreader arms during storage/loading/transit. Reinforced with Zinc coated steel diagonal braces on the front of every other step providing extra rigidity. Extra large PVC rubber safety boots are heavy duty and provide rail protection and slip-resistance.