Replies

1. 
   FastEddie | Aug 09, 2007 09:33pm | #1

   We can tell you, but there's a good chance we would be wrong.  Go look at the door, or check the manufacturers spec sheet.  It will tell you what the RO should be.  Many people buy their doors and windows before framing begins so there's no mistakes.

   "Put your creed in your deed."   Emerson

   "When asked if you can do something, tell'em "Why certainly I can", then get busy and find a way to do it."  T. Roosevelt

2. 
   JTC1 | Aug 09, 2007 09:52pm | #2

   Interior pre-hung door, 1" carpet clearance, rule-of-my-thumb = 38" x 83".

   Nominal door width +2"; nominal door hieght +3".

   Exterior prehung entry door with threshold - all bets are off - I don't have a thumb - seems like everybody is different.

   Fasteddie has it right / safest - get the door first, or know what model you will be using, use manufacturer's recommendations.

   Jim

   Never underestimate the value of a sharp pencil or good light.

1. 
   fwj | Aug 09, 2007 10:51pm | #3

   Jim / Fast Eddy

   Thanks for the response.  I'll go with your advise, get the door and install per their specs.  I do appreciate the input.  I knew I could count on the list for the correct direction to take.

   Stay Cool!

   Frankl

3. 
   a17195 | Aug 09, 2007 11:10pm | #4

   My rule of thumb is generally 2" wider and taller than the door.  Check the suppliers recommendations.  I will reduce L and W by 1/2" if I am sure of the door measurements.  You will need enough room to shim and plumb.  Generally this involves movement room. 

1. 
   mike_maines | Aug 11, 2007 02:33am | #5

   You install a door in an RO only 1 1/2" bigger than the door itself?  How thick are your jambs?

   I add 2 1/2" to the height and the width.  That's a bit more width than necessary but just enough height, and it's an easy rule for my guys to remember.