Length
Total ladder size
Total length with extensions
Total length of ladder in maximum extension.
(Maximum) standing height
This is the highest position of the standing ladder where it is safe to stand.
Maximum range
This is the highest position of the standing ladder plus 2 m (170 cm person with a vertical reach of 30 cm).
Net internal width
The distance between the inner flanges of the side rails of the ladder.
Width of the partition
Width of one rung.
Depth of partition
Depth of one partition. (Rounded to centimetres).
Depth of double partition
Depth of two overlapping partitions. (Rounded to centimetres).
Upper width
Width at the top of the ladder.
Base width
Total width across ladder foot. (Rounded to the nearest centimetre).
Depth of base
Total depth across the foot of the ladder when extended (rounded to the nearest centimetre).
Maximum base distance
The maximum vertical distance from the highest rung or step that the climber is recommended to use to the horizontal plane of the ladder base support, with the ladder in the preferred climbing position.
Minimum base distance
The minimum vertical distance from the highest rung or step that a climber is recommended to use to the horizontal plane of the ladder base support, with the ladder in the preferred climbing position.
Maximum working height
The working height is the length of the non-self-supporting portable ladder measured along the rails from the ladder's base support point to the point of attachment at the top.
Minimum working height
The working height is the length of the non-self-supporting portable ladder measured along the rails from the ladder's base support point to the point of attachment at the top.
Storage height
Measured from the bottom of the footing to the highest point of the ladder with the storage position closed. The extendable legs are positioned vertically. (Rounded to the nearest centimetre).
Storage width with base
Measured across the total width of the widest point of the ladder (rounded up to the nearest centimetre).
Storage depth
Measured across the deepest depth from front to back with the ladder closed in the stowed position, including any legs or wheels (Rounded up to the nearest centimetre).