Fitting Sizes
Need clarification on the chain link fitting sizes you see on this site? Often, a so-called 2" post actually measures 1 7/8" across. This 1 7/8" measurement is called the post's Outside Diameter, or OD.
To experienced installers, professional contractors, and manufacturers, this is second nature, but for the first-time DIY-er, this can be a little confusing. We strongly urge you to measure your posts and rails before purchasing. We've created this table to help you spot the sizing differences.
| Post or Rail Size | Outside Diameter (OD) Size |
|---|---|
| 1 3/8" | 1 3/8" |
| 1 5/8" | 1 5/8" |
| 2" | 1 7/8" |
| 2 1/2" | 2 3/8" |
| 3" | 2 7/8" |
| 3 1/2" | 3 1/2" |
| 4" | 4" |
| 4 1/2" | 4 1/2" |
| 6 5/8" | 6 5/8" |
| 8 5/8" | 8 5/8" |
Still have questions? Call our friendly customer service team today.
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