Product Description
400 Series 32°–36° Stair Rail Mounting Brackets from Superior Outdoor Products – 4 Pack
- Engineered for standard stair pitches — These brackets are designed specifically for 400 Series stair rails on standard 32°–36° stair runs, keeping your drink-rail stair sections properly aligned and supported.
- Perfect for cut-downs and repairs — Every 400 Series stair boxed section includes brackets, so this 4-pack is ideal when you cut longer sections into multiple smaller spans or need to replace damaged hardware without buying a full rail kit.
- Clean, hidden-fastener look — Brackets are designed to work with snap-on covers that conceal screw heads, preserving the 400 Series railing’s no-visible-hardware appearance when installed per Superior’s guidelines.
- Compatible with 36" and 42" stair rails — Works with 400 Series stair sections in typical guardrail heights (36" residential or 42" commercial) when installed according to the system specifications.
- Color-matched to 400 Series rails — Available in White, Clay, and Black to coordinate with 400 Series vinyl railing colors so the brackets blend into your posts and rails instead of standing out.
- Part of a USA-made, code-focused system — These are the same style of brackets supplied in 400 Series boxed sections, which combine vinyl and aluminum construction and are engineered for IBC/IRC code-compliant guardrail applications when installed as directed.
The 400 Series Stair Rail Mounting Brackets from Superior Outdoor Products give you the extra hardware you need to finish stair runs cleanly and securely. Supplied in 4-pack kits and matched to the 400 Series drink-rail profile, these brackets fasten aluminum-reinforced stair rails to your posts on standard 32°–36° stair pitches while maintaining the system’s hidden-fastener look. Use them when you cut a full-length 400 Series stair section into multiple shorter spans or when you need replacement hardware to keep an existing installation performing and looking like new.
Why Choose These Brackets
- Matched to 400 Series engineering — Uses the same bracket style and fastening pattern specified for 400 Series boxed stair sections, helping you stay within the tested system details.
- Stair-specific geometry — Designed for the 32°–36° range typical of most residential and light commercial stairways, so rails sit correctly on standard stringers.
- Supports code-compliant guardrails — When used with 400 Series stair sections and installed according to Superior’s instructions, these brackets help maintain a strong, code-focused stair assembly.
- Ideal for custom layouts — Extra stair bracket kits make it easy to adjust rail lengths around landings, returns, and partial flights without improvising hardware.
- Color-coordinated hardware — White, Clay, and Black finishes match 400 Series stair rails and posts, keeping the visual focus on the railing design and deckboard top rather than the fasteners.
- Contractor- and DIY-friendly — Pre-engineered hardware with included screws and snap-on covers simplifies installation and reduces jobsite fabrication.
Specifications
| Attribute | Details |
|---|---|
| Product | 400 Series 32°–36° Stair Rail Mounting Brackets – 4 Pack |
| Brand / Series | Superior Outdoor Products – 400 Series Vinyl Railing |
| Intended Use | Mounting 400 Series stair railing sections to posts on 32°–36° stair runs |
| Angle Range | Standard stair pitches from 32° to 36° |
| Compatible Rail Heights | 36" residential and 42" commercial 400 Series stair rails (per system offerings) |
| Rail System Compatibility | 400 Series drink-rail stair sections (Model, Madison, York, Whitmer infill options) |
| Pack Quantity | 4 brackets with installation screws |
| Finish / Covers | Designed to be used with snap-on covers that conceal bracket screws |
| Available Colors | White, Clay, Black (to coordinate with 400 Series railing colors) |
| Location | Exterior or interior stair guardrail applications as permitted by code |
| Included in Boxed Sections | Yes — stair boxed kits include brackets; these 4-packs are for extras or replacements |
| Country of Manufacture | Made in the USA as part of Superior’s railing program |
Installation
Always follow the current Superior Outdoor Products 400 Series installation guide and local building codes. After setting your structural posts and sliding on 4" post sleeves, mark the rail height locations for 36" or 42" stair guardrails along the 32°–36° stair line. Position and fasten the stair brackets to the posts using the supplied screws, keeping brackets aligned with the rail angle. Cut the aluminum-reinforced stair rails to length if needed, seat them into the bracket pockets, and secure them through the pre-marked holes. Once all rails are attached and fastened, snap on the bracket covers to conceal the screws and verify that the stair rail assembly is rigid, properly sloped, and meets required handrail/guardrail height and spacing requirements.
Buying Guide
- Confirm your stair pitch — Use these brackets only when your stair run falls within the 32°–36° range. For shallower or steeper pitches, choose 400 Series universal stair brackets instead.
- Count brackets beyond what’s in the box — Each 400 Series stair boxed section includes brackets. Order additional 4-packs when cutting one section into multiple smaller spans or when you know you’ll be replacing existing hardware.
- Match bracket color to your railing — Select White, Clay, or Black to match your 400 Series rails and posts so the brackets visually disappear into the system.
- Plan posts and sections together — Lay out your stair run, mark post locations, and determine how many stair sections and extra bracket kits are required before ordering.
- Use universal brackets for non-standard conditions — For ramps, atypical stair angles, or transition rails that fall outside 32°–36°, pair 400 Series rails with the adjustable universal stair brackets instead of these fixed-angle brackets.
Frequently Asked Questions
What are 400 Series stair rail mounting brackets used for?
They’re used to attach 400 Series stair railing sections to posts on standard 32°–36° stair runs while maintaining the system’s hidden-fastener, drink-rail design.
Do 400 Series stair boxed sections already include brackets?
Yes. Each 400 Series stair boxed section comes with rail brackets and screws. These 4-packs are intended for cut-down sections or replacement of damaged hardware.
What stair angles do these brackets accommodate?
These brackets are designed for typical stair pitches between 32° and 36°. For stair or ramp angles outside that range, use 400 Series universal stair brackets instead.
Are these brackets compatible with all 400 Series infill styles?
Yes. They are designed for the 400 Series drink-rail profile and work with Model, Madison, York, Whitmer, or other compatible 400 Series infill options.
What colors are available for the 400 Series stair brackets?
400 Series stair bracket kits are offered in White, Clay, and Black to coordinate with 400 Series rail and post colors.
Can I use these brackets on level runs?
No. These are stair-specific brackets for angled runs. Use dedicated 400 Series level rail mounting brackets on flat, level sections.
Comparison
| Option | Key Strengths | Best Use |
| 400 Series 32°–36° Stair Brackets (this product) | Fixed-angle brackets matched to 400 Series drink-rail stair sections; clean, hidden-fastener look. | Standard 32°–36° stair runs where you are installing or modifying 400 Series stair rails. |
| 400 Series Level Rail Brackets | Designed for horizontal runs only; keep level rails aligned with posts and deckboard receiver. | Flat deck or porch perimeters using 400 Series level rail sections. |
| 400 Series Universal Stair Brackets | Adjustable hardware for a wider range of stair and ramp angles beyond 32°–36°. | Non-standard stair pitches, ramps, or transition rails needing more angle flexibility. |
| Generic off-brand stair brackets | May be lower cost but typically lack 400 Series-specific geometry, colors, and screw covers. | Non-critical projects where matching the tested 400 Series system and appearance is less important. |
To complete your 400 Series deckboard-style stair railing, pair these 32°–36° stair brackets with 400 Series stair boxed sections, matching posts, caps, and trim. If you’d like help planning a full materials list or deciding when to use fixed-angle vs. universal brackets on your project, please contact us.
