I would love to help but we do not have any information on your 2005 Dutchmen Denali Fifth Wheel Trailer therefore, in order to determine compatibility of the SolidStep Manual Fold-Down Steps you will need to take two measurements. The first measurement is going to be the width of your door frame (inside to inside). The second measurement is going to be the height from the ground to the bottom of the door (top to bottom).
If the above width is between 28" - 30" and the above height is... view full answer...