2-1/2", 4" & 6" Posts
On Sale!
Heavy-duty aluminum posts designed for maximum strength and versatility. Available in multiple sizes to accommodate various railing and structural applications.
2-1/2″ Posts
- Best for residential decks and porches
- Available in 37″ and 47″ heights
- Most popular choice for home projects
4″ Posts
- Heavy-duty for residential or commercial applications
- Stronger construction for larger railings
- Good for high-traffic areas
- Available as sleeves or with welded plate
6″ Posts
- Maximum strength for residential or commercial use
- Largest size post option available
- Available as sleeves or with welded plate
Key Features
All posts feature powder-coated aluminum construction that resists rust and requires no maintenance. With multiple mounting options and professional-grade construction, these posts are perfect for deck and porch railings, commercial buildings, industrial facilities, and any application requiring strong, permanent support. Choose your post size based on your project requirements and local building codes.
Quick Ship items will ship within 3-4 days. Please allow 10-14 days order time for all others.
Frequently Asked Questions
What sizes of aluminum posts are available?
MMC offers 2½″, 4″, and 6″ wide aluminum posts, catering to a range of Westbury railing systems from residential to heavy-duty commercial applications.
What are the typical post heights offered?
Standard post heights include 37″ (level) and 47” (stair for 36” railing and 43″ (level) and 53″ (stair) for 42” railing, available either with welded base plates or as sleeves.
How are the base plates mounted?
Posts come with pre-welded base plates for easy surface mounting, ideal for attaching to wood, composite, or concrete surfaces .
What finishes are available?
Choose from 12 architectural-grade powder-coated colors, including Black Fine Texture, Bronze Fine Texture, Sandy Shore, Gloss White, Gloss Beige, Speckled Walnut, Satin Black, among others.
Are there decorative options?
Yes—MMC offers standard smooth posts, Deco posts, and crossover post kits, which seamlessly allow continuous handrails around corners.
Which railing systems are these posts compatible with?
These posts work with all Westbury aluminum railing systems, including Tuscany, Riviera, VertiCable, and more. Power-Posts can support commercial-grade or high-load installations.
What’s the wall thickness of the posts?
- 2½″ posts (Standard and Power-Posts): 0.125″ wall
- 4″ posts: 0.125″ wall Smooth wall; 0.065” Deco Sleeves; 0.090” Deco with welded plate
- 6″ posts: Smooth 0.125″ wall; Deco Posts 0.110” wall
Are crossover post kits available for stairs?
Yes, MMC carries 2″ stair crossover kits which are attached to your intermediate posts to provide a continuous top rail.
Are sleeves offered for retrofit applications?
Yes—post sleeves are available in 4″ sizes (37″, 43″, 47″, 53″) to cover existing posts, offering a refreshed appearance without structural changes.
Do these posts come with a warranty and durable finish?
Yes—all posts go through a 10-step AAMA-compliant powder-coating process, cured at 400°F, and are backed by DSI’s lifetime limited warranty.
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 inventory 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: 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 (7–8′) 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 ship immediately We also 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.
