UPDATED WIDTH ADJUSTABLE DOORWAY PULL UP BAR:Real adjustable width design can match your doorway more accurately, even doors in the corner. This door frame pull-up bar has 5 levels of adjustment for width and 2 levels of adjustment for thickness can be precisely mounted on any standard 21.65 "- 39.37" wide doorways,depth of 4.7"-8.27",Acceptable trim height up to 3.75"easy to install and remove. Design does not necessitate screwing into frame making the assembly easy to remove. HEAVY DUTY CONSTRUCTIONHOLD UP TO 500 LBS: The pullup bar make from 1.7mm thickened chrome steel.Original no break in the middle , double steel pipe superposition construction.These features permit the 500lb weight limit.High quality lock nuts help prevent loosening of the assembly.The fine powder coating prevent rust and corrosion.High fiber foam handles provide a comfortable grip, anti-slip and wear resistance.