This is one of the most stable and best portable ladder stabilizer system for painting narrow stairwell wall and 16' high ceiling. We also use this for exterior stairs and side wall painting with Guardian Fall Protection 10800 Safe-T Ladder Extension System, & Werner AC78 Quick click Stabilizer.

Ladder-Aide Pro support ladder with maximum 22" base with 7.5" width foot. Locking pin system can be improve but everything line up easily. We frequently pair this with Gorilla Ladders
14 ft. Reach Aluminum Multi-Position Ladder with 300 lbs. Load Capacity with base spread (in.) 21.2 in. Rubber padding securely grip carpet, hardwood, laminated stair surface and allow us to use all standard stairs. High adjustment can be make 3/23" increment.

The product was really sturdy on the stairs. Worked as described with an extension ladder in a stairwell. The assembly was really easy to setup and adjust as needed. The pins make it even easier and it disassembles really compact.

I had some doubts when reading the advertisements about this device. But, the only alternative was scaffolding which was going to be a nightmare to install and would have to be rented and transported. This unit is adjustable for just about any stair dimensions and is very stable. We used it with a 16 foot extension ladder, but with the ladder all the way retracted at 8'. A longer ladder would not work in a typical stairwell. Also, the adjustable ladders like Little Giant and others sold at Lowe do NOT fit this device as those ladders flair out at the base and are too wide to fit the Ladder Aide. One person can set this up with the ladder, but having a helper makes it a bit easier. I used it on bare wooden stairs and the Ladder Aide has a rubber surface that contacts the stairs to you won't experience any marring of the wood. I don't know if thickly carpeted stairs would affect the stability.

If you need to use a ladder on stairs, you need this. There are a number of youtube solutions to the problem, but Ladder-Aide Pro is your best SAFE solution. Easy to set up and easy to use.

Painted over the stair well of our split foyer. Ladderaide Pro performed as advertised. Was easy to assemble and install. Ladder remained stable throughout the effort. Felt safe and secure on the ladder, working over the stairs.