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TECHNICAL INFORMATION

June 29th, 2018

6/29/2018

1 Comment

 

Rough Opening Measurement Calculations 


It is not uncommon being a few inches off the correct measurement for a door, frame or opening. At Ahner Commercial, we've realized people who maybe unfamiliar with this industry do not have an understanding with the measuring of rough openings and how they correlate to the correct door and frame sizes. Well we can help you! This process on how to properly estimate your rough frame opening can be explained below. The various intricate amount of materials and sizes may make the process seem difficult to learn at first but let us assure you, you can do it!  
Have a question or need assistance? Give us a call at our Office, (419) 960-7307.

Rough openings can be calculated as follows:

For masonry frames:  Add 4" to the width of the nominal opening size.
                                        Add 2" or 4" to the height depending on the head size.
                                        Add 1/4" for spacing to height and width.
Ex. A 3070 frame with a 2" head would get an R.O. of 40-1/4" x 86-1/4"
      A 3070 frame with a 4" head would get an R.O. of 40-1/4" x 88-1/4"
      A 5068 frame with a 2" head would get an R.O. of 64-1/4" x 86-1/4"


For drywall KD frames:  Add 2" to the width of the nominal opening size.
                                            Add 1" to the height of the nominal opening size.
                                            KD frames fits over stud and drywall by 1".
                                            KD frames always have a 2" head size.
Ex. A 3068 frame would get an R.O. of 38" x 81"
      A 2868 frame would get an R.O. of 34" x 81"
      A 3070 frame would get an R.O. of 38" x 85"
1 Comment
Sam Li link
5/17/2019 15:51:29

I like what you said about your formula to calculate the cost of rough openings. Investing in commercial doors is a great way to attract more people to your business. My best friend wants to start a business, so I'll make sure to help him find a service that specializes in creating commercial doors.

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Ahner Commercial Door & Window
​2435 E Gill Rd
Port Clinton, OH 43452
Located in Port Clinton, Ohio
​We are dedicated to bringing excellent customer service and quality products at the lowest cost to you. 
Phone: 419-960-7307
Fax: 419-734-9275
Email: ​DAhner@AhnerCommercial.com
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  • Home
  • Products
    • Architectural Hardware
    • Hollow Metal Doors & Frames
    • Specialty Doors
    • Storefront Aluminum & Glass
    • Washroom Partitions & Accessories
    • Wood Doors
  • Services
    • Automatic Operators Service & Installation
    • Commercial Door Bid Support
    • Fire Door Assembly Inspections
  • Contact
  • PORTFOLIO
  • Store
    • Automatic Operators
    • Blanks and Fillers
    • Bolts
    • Cylindrical Leversets
    • Deadbolts
    • Door Stops
    • Door Viewers
    • Electronic Locksets
    • Frame Anchors
    • Gasketing
    • Guards and Latches
    • Hinges
    • Hydraulic Closer
    • Kick Plates
    • Interconnected Locksets
    • Lite Kits and Louvers
    • Mortise Locksets
    • Panic Devices
    • Push and Pull Plates
    • Sealants
    • Seals
    • Shims
    • Strikes