If your stairs ‘curve’ or ‘turn’ either at the bottom, half way up or at the top of the stairs then you need curved . If there is no curve then you require a straight . There is then the option of a brand new or reconditoned , again effecting the .
and Costs. Firslty you need to identify which you need to have fitted. If you have an angle or 90 degree turn either at the top, middle or bottom of your stairs then you will more often than not need a curved installed.