Yes. Yes. And Yes!
The pressure that the no screw pull up bar applies to the walls is very firm. Once you start hanging on your chin-up bar, it is also unlikely that the bar will slide off the wall as you exercise. These pull-up bars are designed so that the end pieces get pressed into the sides of the frame.
The no screw chin-up bar has a weight limit between 220 and 300 pounds. If you weigh 240 pounds and your pull-up bar has a weight limit of 230 pounds then you shouldn't use it.
Looking to Get One
Well, it so happens that you can buy this high-quality no screw chin up bar for a good price.
Ways to stay safe when using the no screw chin-up bar
Though the no screw chin-up bar is safe, certain actions can compromise that safety. You have to avoid making bad decisions listed below.
Do not use a weak or plastic door trim
The no screw chin-up bar is strong but a weak door trim will increase the chance of failure. Plastic door trim can break and cause you potential injury.
Don't swing on the chin up bar
Chin-up bars are made in such a way that stays in plays when downward pressure is applied to them. Swinging back and forth or side to side introduces all sorts of pressures away from the center of gravity that can cause it to pop off. Results can end up being devastating.