Vinyl Column Adapters
On Sale!
Professional mounting solution for attaching railings to round columns. Connect your railing system to existing round posts with precision-engineered adapters.
Available Sizes
8″ Round Column Adapters
- For standard 8″ diameter round columns
- 3-3/4″Wide and heights of 3-ยผโ, 4-โ โ and 5-ยฝโ
- Stair railing: 3-3/4″ Wide and 6-ยฝโ Height
- Height can easily be adjusted
- Available in 4-packs
10″ Round Column Adapters
- For 10″ diameter round columns
- 3-3/4″Wide and heights of 3-ยผโ, 4-โ โ and 5-ยฝโ
- Stair railing: 3-3/4″ Wide and 6-ยฝโ Height
- Height can easily be adjusted
- Available in 4-packs
Benefits & Applications
These precision-fit adapters provide seamless railing attachment with multiple sizes for different column diameters. They require no custom fabrication and feature weather-resistant construction for indoor and outdoor use. These adapters are essential when you have existing round columns and need to add railing systems, including attaching deck railings to round porch columns, connecting stair railings to cylindrical posts, upgrading existing column structures with new railings, and commercial installations with architectural round columns.
Transform your round columns into functional railing support with professional column adapters.
Not Applicable
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Frequently Asked Questions
What are round column adapters used for?
They provide a flat mounting surface on 8โณ or 10โณ round columns, allowing standard brackets to be installed securely.ย
What sizes do these adapters fit?
MMC offers adapters for 8โณ and 10โณ round columns, suitable for both flat and stair railing brackets.ย
What material are MMCโs adapters made from?
These adapters are made from extruded vinyl.
What do the adaptersโ dimensions measure?
For 8โณ and 10โ column adapters:
- Small - 3-3/4โW x 3-1/4โT
- Medium -ย 3-3/4โW x 4-3/8โT
- Large - 3-3/4โW x 5-1/2โT
- Stair - 3-3/4โW x 6-1/2โT
Are the adapters sold individually or in packs?
They are sold in 4-packs enough for a railing section.ย
Can vinyl column adapters be trimmed on-site?
Yesโvinyl adapters can be cut down to fit specific project dimensions, accommodating a variety of vinyl railing systems.ย
Do I need separate adapters for stair vs. level installations?
YesโMMC offers different sizes to accommodate your mounts for both 8โณ and 10โณ columns.ย
How are adapters installed?
Adapters wrap around the column to create flat mounting surfaces. Theyโre secured using your mounting brackets which attach directly to them (You may need to provide longer screws if necessary).
Are these adapters compatible with vinyl and aluminum railings?
Yesโthey work with both aluminum railing and vinyl railing systems, offering flexible solutions.ย
Why should I use column adapters instead of custom carpentry?
Adapters offer a faster, more precise, and less labor-intensive solution than building flat column plates by hand, saving time while maintaining aesthetics and structural integrity.ย
Free shipping in the continental US for any purchase over $3000. Deliveries to residential addresses in the continental US will incur a $200 charge unless the total sale is over $4500. Our system will automatically show you the appropriate shipping option at checkout – either free shipping or freight shipping with contact for pricing.
We invite you to look at our QuickShip Courtyard Fencing for styles that can ship immediately. Please call first to check on available inventoryย in Courtyard. Some special-order products have a 3-4 week order time.
FREE SHIPPING with a purchase of $100 or more*
Applies only to the Continental U.S:ย Westbury Gates, Verticable Sections, and Sorrento Sections have a $1,000 minimum for free shipping. Juliette Balconies require a $1,500 minimum for free shipping. Longer Westbury sections (7โ8โฒ) have a $500 minimum. Courtyard Fencing purchases cannot be combined with non-Courtyard items to qualify for free shipping. Our system will automatically show you the appropriate shipping option at checkout – either free shipping or freight shipping with contact for pricing.
Some Westbury Tuscany colors are in stock and are ready to shipย immediately We alsoย have Quick Ship on Riviera C30 style and Verticable C80 in Textured Black and Textured Bronze which can ship in 2-4 weeks. Please call first to check on available inventory in Westbury. Some special-order products have a 3-4 weeks order time.
