Question about Elani Pull up bar for door frame

Hello SankaMan. I think that if the door frame is stable in and of itself, i.e. not made of wood but of steel - as usual - then it should hold. Because the pull-up bar has an excellent anti-slip layer that really holds. I'm 80kg, do my pull-ups/exercises every day and we have a smooth, white surface, so we have to pull harder than on a rough surface (= plaster), and the bar doesn't slip. Zero, nothing, nada.
In short: I can recommend it to you! :-)