The ladder is available in a variety of sizes, but the 6-foot model will suffice for interior painting. It has a maximum standing height of 46 inches, which should be adequate to reach the ceiling and upper corners of most spaces comfortably.
For example, the Werner ladder, like the Flip-N-Lite stepladder, includes wide, slip-resistant steps and footpads, as well as a weight capacity of 300 lbs. The ladder is safe and strong in general.
