A24 to 2400mm height A33 to 3350mm height A27 to 2700mm height A36 to 3660mm height A31 to 3100mm height Features * Top quality, heavy duty aluminium sections * 100 mm deep treads * Extra strong hinges * Designed and made in NZ * Simple height adjustment * Fully assembled and ready for installation * Easily Retracted by adjustable spring system * MDF lid included Applicatiions * Domestic * Commercial * Industrial