Accessory for Phoenix spiral staircase model K07084 - up to three additional risers can be added to reach a maximum height of 148-7/16 in.
- Interior installation
- Additional riser kit consists of one beech wood tread, four balusters, connectors and hardware
- Each riser will add 29.4 degrees to the rotation of the stair
- Rise adjustable from 8-3/8 in. to 9-11/32 in.
- Use only with model K07084
- Important: consult your local building inspector for specifics regarding compliance with the local building codes