Will 1 3/4" doors fit in a 1 1/4" frame?

Old 02-16-04, 02:30 PM
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Question Will 1 3/4" doors fit in a 1 1/4" frame?

I am considering buying a set of Ovation Infinity Doors from someone who is re-selling them in my area. They've never been installed, but I am buying them "used." My question is this: All the doors in my house are 1 1/4" thick, but the Ovation doors are 1 3/4" thick. If I buy the Ovation doors, will they fit in my current door frame? Or will I have re-frame all the doorways in my house? If they don't fit, can you tell me where I can find high quality doors that are only 1 1/4" thick? Is there a company that makes them? Thanks so much for your help.
Old 02-16-04, 08:40 PM
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A 1-1/4" door is the standard interior door thickness. A 1-3/4" door is the standard exterior door thickness. But there is nor reason that you can't install 1-3/4" thick doors in an interior jamb.

However, it'll take some slight alterations in order for it to fit.

You'll start by removing the door stops on your present jambs. Then you'll have to mortise the slots for the hinge leafs to fit in the jambs. They will have to be 1/2" farther into the jamb, to allow for the extra 1/2" of door thickness. And, if the leafs are already mortised into the doors, you'll probably have to make some adjustment for the height as well.

Once you get the door installed and swinging, you'll have to adjust the hole for the latch of the lockset. It will have to be set 1/4" deeper into the hamb (to compensate for the extra thickness), and it to may have to move up or down. (A larger strike plate may be necessary to hide your alterations)

NOW you can re-install the door stops so that they fit the new door. Same door stops, but they'll be 1/2" deeper into the jamb (to allow for the extra thickness), and you'll set them using the door as the guide, to allow for any warpage or variations that may occur.

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