The Stairmaster Staircase Ladder Leveller is designed to allow work to take place safely in stairwells when the user needs to place the ladder sideways-on on the stairs.
It can be fitted to either of the ladder stiles, depending upon which side of the stairwell the user wishes to reach and is long enough to be used on stair treads with an individual rise of 6 ½” to 9” (165mm to 230mm).
Building regulations specify a maximum rise of 220mm. The total rise height of the Stairmaster Staircase Ladder Leveller is equivalent to two treads, i.e. 13” to 18” (330mm to 440mm), in increments of 1/8” or 3mm.