Description
2 in. x 2 in. Aluminum Post Kit with Welded Base Plate
2 in. x 2 in. Aluminum Post Kit with Welded Base Plate is an undermount post, designed to go underneath a cap. It is used with the floating top cap. It can also be used with wooden caps, or basically any cap, and it can be cut down.
The post is 2 in. square aluminum, in 35 in. residential or 41 in. commercial height, for under-cap or smooth-cap mounting. The welded base is a 4 in. x 4 in. x 1/4 in. square plate. It is designed to be used with our 2-piece low-profile base cover (choose the 2×2 size), or without a base cover.
Where to Use It
The 2×2 undermount post is a mid-post, not a structural post. It does not replace our 3×3 railing posts at ends, corners or stairs. It sits under the top cap and does not extend above it, so it can’t be used to join railing sections together.
- Cable railing: Use it as an intermediate post between 3×3 terminal or line posts. It eliminates the need for cable stays and the traditional bottom frame.
- Picket railing: On a long run, like an 8 ft section on a second-story balcony, you may need a center support to meet code. Use 3×3 posts at the ends and a 2×2 undermount post in the middle. You get the support with a cleaner look than three 3×3 posts in 8 feet.
What’s Included
Each kit includes the post and welded base plate. A Post Hardware Kit and two Capri clips can be added with the Yes / No dropdowns. Each post needs one Post Hardware Kit and two Capri clips unless you already have them.
- 2 in. x 2 in. square aluminum undermount post, 35 in. or 41 in. tall
- 4 in. x 4 in. x 1/4 in. welded base plate
- Post Hardware Kit, if Yes is selected: (3) 1 in. self-drillers, (4) 7/16 in. bolt caps, (4) 1/4 in. tee nuts, (4) 1/4 in. flat washers, (4) 1/4 x 4 in. threaded bolts, and (4) 1/4 x 3 in. wedge bolts
- Capri Clips (2), if Yes is selected: two color-matched clips, each with (4) #10 x 3/4 in. self-drilling fasteners. These clips are designed to fasten the top of the vertical post to the underside of the horizontal cap.
Compatibility
- Designed to go underneath a cap (undermount)
- Used with the floating top cap
- Can be used with wooden caps, or basically any cap
- Welded 4 in. x 4 in. x 1/4 in. base plate can be used with our 2-piece low-profile base cover (choose the 2×2 size), or without a base cover
Important Installation Notes
- Each post needs one Post Hardware Kit and two Capri clips unless you already have them. Choose Yes or No on the dropdowns.
- The Capri clips are designed to fasten the top of the vertical post to the underside of the horizontal cap.
- The post can be cut down.
- If you use the Post Hardware Kit on a wooden deck, you will need access to the underside of the deck to position the tee nuts.
- A pyramid cap is not included.
- Verify local building code requirements prior to installation.
Who This Is For
- Installers using an undermount 2 in. x 2 in. post under a floating top cap
- Projects that use a wooden cap or another cap over the post
- Residential (35 in.) or commercial (41 in.) heights
Shipping
- Shipping calculated at checkout








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