General Information - Framing/Rough Opening

If a customer is ordering a frame to be used full height with a 9' ceiling, what is the recommended order height?
If the ceiling is 9' high we need 1 3/4" for the face of the header and we need 1/4" to arc the casing over the clip. The minimum we can get by with in most cases, is 2" at the head. You should order a 8'10" frame maximum.

What is the minimum stub wall required to anchor the Timely frame? Also, what other requirements do we have for that stub wall?
A minimum of 2" is required at each side of the opening to anchor the frame. This stub wall must be solidly anchored to the structure to guarantee that the frame is also anchored solidly. If using steel studs, we recommend that you use 2 studs to form a box to stiffen the stub wall. (Note: This is for use with TA-8, TA-23 and TA-28 casing, consult office for stub wall dimensions for TA-30 and TA-35 casing)

What is the rough opening for a 3/0 x 7/0 frame with a 2 foot sidelite on both sides of the door?
You must allow 2" for each mullion plus the door area, plus glass area, for a total of 88". The rough opening must be 1 1/4" over the width for a total of 89 1/4". The rough opening for the height is 1" over for a total of 85" for the whole opening. Example: 24" + 2" + 36" + 2" + 24" + 1 1/4" = 89 1/4".

What would be the rough opening for a 3/0 x 6/8 door frame?
Although we ask for 1 1/4" over door width and 1" over height making the ideal rough opening 37 1/4" x 81" we can get by with 1" over door width if necessary.

What are the minimum and maximum width and height tolerances for the rough opening?
Minimum Width 1"
Minimum Height 3/4"

Maximum Width 1 1/2"
Maximum Height 1 1/4"

Note: All rough opening dimensions are measured from the finished floor.