ST10 Steel Railing
RailMaster ST10 is a pre-galvanized steel railing in matte black with pre-assembled panels and posts, for residential and commercial decks, patios and balconies.
About ST10 Steel Railing
ST10 is RailMaster's pre-galvanized steel railing, finished in a premium anti-corrosion powder coat in matte black. Balusters are 5/8 inch square 18 gauge, rails are 1.25 inch square 14 gauge, and posts are 2 or 3 inch square 14 gauge. RailMaster publishes evaluation report ESR-5479.
Panels and posts come pre-assembled with pre-mounted brackets. Level panels at 34 inches come in 6, 8 and 10 foot lengths, and at 40 inches in 6 and 8 foot. Stair panels at 34 inches are 6 and 8 foot, and at 40 inches 8 foot. Pivoting stair brackets and hinged baluster panels adapt to different stair layouts. A factory-assembled gate fits a 36 inch opening. Accessories include angle and fixed brackets, drink rail brackets, caps, skirts, touch-up paint, gate upright and swing gate kits, and replacement bracket covers.
Warranty is 15 years residential and 10 commercial, but 1 year within one mile of saltwater. For a quote, send height, panel and stair counts, posts and gates.

Colors, sizes and specifications
Colors and finishes
- Black matte, 4-layer protection powder coat
Sizes and configurations
- Level panels: 34 in H in 6, 8 and 10 ft lengths; 40 in H in 6 and 8 ft
- Stair panels: 34 in H in 6 and 8 ft; 40 in H in 8 ft
- Finished rail heights 38 in and 42 in
Features
- Pre-assembled panels and posts with pre-mounted brackets
- Pivoting stair brackets and hinged baluster panels fit different stair layouts
- Premium anti-corrosion powder coat
- Factory-assembled gate for a 36 in opening
- Evaluation report ESR-5479
Specifications
| Balusters | 5/8 in square x 18 ga |
|---|---|
| Top and bottom rails | 1-1/4 in x 14 ga |
| Posts | 2 in x 2 in x 14 ga and 3 in x 3 in x 14 ga |
| End/corner/mid posts | 40 in or 44 in high |
| Fascia post | 52 in |
| Gate | 34.5 in wide, 34 or 40 in high |
Accessories and works with
- Angle and fixed brackets
- Drink rail brackets
- Post caps and post skirts
- Touch-up paint
- Gate upright kits and swing gate kit (latch and 2 hinges)
- Replacement bracket covers and Torx screws
Best for
- Decks, patios and balconies, residential and commercial
Warranty
15-year limited (residential); 10-year limited (commercial)
One product or the whole package
Order this on its own, with a few related products, or with everything else for the project. One itemized quote, shipped to all 50 states. Need someone to install it? Find an installer serving your area.
Request a quote for ST10 Steel Railing
Send plans, measurements, or photos and we will prepare an itemized quote. You can also call us with questions.


