3½" Slim Railing System
A slim rail of about 3½" for stair landings, small stoops, interior balconies and budget-friendly porch railings. RAL2104 is the economical top/bottom pair, and RAL2125 is a taller 3½" alternative.
What goes into each railing section
- Rails: one top rail and one bottom rail per section from the RAL2104, RAL2125 family. They come in 8, 10 or 12 ft lengths and are cut to fit between posts.
- Balusters: 25 Spectis baluster styles whose own product listings say they fit these rails. Spacing follows the 4-inch sphere rule.
- Newel post and cap: No newel post or cap is matched to these rails in our listings yet. Ask us for a recommendation.
- Newel posts that fit: none yet. No Spectis newel post is within about 1" of this rail width. Ask us about posts, columns or custom options.
- Installation pieces: One KIR02 rail kit per top/bottom pair, and SUP01 (4") or SUP02 (2") support blocks.
Picking baluster height
| Target top-rail height | Support block | Baluster length needed (approx.) |
|---|---|---|
| 30" | 4" | 19.8" |
| 30" | 2" | 21.8" |
| 36" | 4" | 25.8" |
| 36" | 2" | 27.8" |
| 42" | 4" | 31.8" |
| 42" | 2" | 33.8" |
Finished height ≈ support block + bottom rail (3.125") + baluster + top rail (3.125"), using RAL2104 dimensions. This is a planning estimate only. Check local code (typically 36" for homes and 42" for guards) and the drawing for each part before ordering. Rails end at newels, columns or walls and are never joined to one another.
Compatibility on this page is taken from the "rails that fit" information on each Spectis product listing, together with the Spectis Balustrade Systems catalog for hardware, newels and caps.
Want us to put together the parts list? Send your plan or photos, or call 800-986-1250.
Planning your installation? View the illustrated Balustrade Installation Guide & resources
Includes our technical-review draft and a link to the manufacturer’s current installation instructions.
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RAL2104 Railing System with Baluster Combinations
$1,333.00 - $3,554.00RAL2104 Handrail System: Choose Your Length and Baluster Build a coordinated railing with slim RAL2104 top and bottom rails and your choice of five baluster model-and-height combinations. Choose...$1,333.00 - $3,554.00 -
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