Doesn't the strength of this all depend on your door knob and door strength? Seems you need a solid metal door and a heavy duty door knob.
1480825
My doorknob has no screws, and the door seems to be wood. So, no is my answer.
1480826
Definitely the material your door, hardware, and frame are made off all factor in to total strength. But.... I can assure you in most cases this won't be your weakest point. Also when inward force is applied to the door the angle of opposing force from the brace forces the door itself up and in to the door frame. All in all I looked at several and while any and/or all deterrents will work to some degree... This one is 100% top quality. Heavy duty pipe,very secure latching mechanism, yet not terrible to use daily.
1480827
Yes, but I think it would take a tremendous amount of force to rip any door knob in half. Would require all mounting screws that go through the door to be stripped or snapped with a lengthwise force.
2181253
Yes, but... This is exactly my door frame dimensions, so I had to use only first bolt connector instead of both to put it together. I'm 185# and it doesn't seem to affect the strength of the unit.
224205
Assuming you have the tools to cut the metal door, it all depends on the thickness of your door (many storm doors are pretty thin). Measure the thickness of your door and see what the minimum supported door thickness is for the doggy door from its description. If your door is too thin, then you will have to get creative with the installation to make it work.
611180
I'm not sure about the strength of the metal but it is sturdy. The door is just pushed open by there nose it swings inward freely. As smart as some pest are they could for sure get into the food.
673792
If you used an appropriate screw with anchor system you could (anchor because most doors are hollow core). If solid door no issue at all and a good idea. We have 4 of them. :)
1257427
I'm not sure. I have mine on a regular door with a brutal B-ready, and it works great! I was afraid it was going to be too heavy or not be sturdy, but I was very impressed!
1317982
I'm in agreement with the rest of customers who answered. Know that the threshold height was enough that I ripped off about 1-1/2" of wood door material off the bottom so that the door would close off on the top. A metal door you would not have this option. The threshold has held up and seals off the bottom very well.
1548948
My door is hollow and catches at times. I would say no it is strong but would not help if the door itself is weak.
1624465
Too heavy to be mounted on a standard cabinet door. The wall is the best option cause of weight after polishes are in it. Hope that helps!
700438
Yes, it absolutely will. I've never had an issue with it, but we try to be pretty careful when opening the door. As one commenter noted, you have to open the door pretty vigorously for this to be a real problem.
476777
Probably not heavyweight enough. Maybe if you can do one at the top and bottom and the door is not too heavy
2113200
I would think so, because the door would be so heavy you would need the support
1059762
So long as the door is wood you should have no problems. I'm not sure about metal doors since ours went on a wooden door.
95568
if your question is in regards to a mobile / modular home, the answer would be yes because it's just like a typical door knob.
1788755
No your door should have the torsion bar if not you must convert it to the torsion bar system.The unit will com with all the hardware that you need to conect to the torsion barOn the door.
979210
Sorry, can't help. I use mine on a single aluminum door, and it works great!
940928
No. In fact I couldn't use it for my doors. I live in New Orleans and we have old heavy wood doors. Totally useless.