Superior Outdoors 400 Series 36" or 42" Model Deckboard Vinyl Railing Stair Sections - Choose Your Height, Length, & Color

Product Description

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Superior Outdoor Products 400 Series 36" or 42" Model Deckboard Vinyl Railing Stair Sections – Choose Your Height, Length & Color

• Deckboard-ready stair drink rail — 400 Series Model stair sections feature a pre-attached aluminum deckboard receiver on the top rail so you can fasten a deckboard of your choice (deckboard not included) and carry the drink-rail look cleanly down your stairs.
• 36" or 42" stair guard heights — Choose 36" tall stair sections for many residential applications or 42" tall sections where a higher guard is preferred or required by local building codes.
• 6' and 8' stair lengths — Standard 6' and 8' stair spans are designed for typical deck and porch stair runs and can be trimmed to match exact post-to-post openings.
• Model 1.3" square vinyl balusters — Each stair kit includes 1.3" square vinyl balusters that maintain code-conscious spacing when installed per the 400 Series guidelines, giving your stair guard a clean, uniform infill.
• Aluminum-reinforced top and bottom rails — Both the vinyl top rail with deckboard receiver and the vinyl bottom rail are reinforced with aluminum inserts for added stiffness on sloped stair runs.
• Four core rail colors — Available in popular railing colors such as White, Almond, Clay, and Black so you can coordinate with level sections, posts, and your decking color scheme.
• Stair brackets for 32°–36° pitches — Included stair mounting brackets are engineered for standard stair angles (approximately 32° to 36°), simplifying most straight stair installations.
• Complete boxed stair kits — Each 400 Series Model stair kit includes a top rail with deckboard receiver, bottom rail, aluminum inserts, Model balusters, stair brackets with screws, and an installation guide; posts, caps, trim, and deckboard are sold separately.
• Professional-grade, made in the USA — 400 Series vinyl railing is manufactured in the USA from high-quality virgin vinyl and aluminum and is engineered as a code-conscious, third-party-evaluated guard system when installed per current specifications.

The Superior Outdoor Products 400 Series 36" or 42" Model Deckboard Vinyl Railing Stair Sections extend the drink-rail concept from your deck or balcony onto the stair runs themselves. Each boxed stair kit pairs aluminum-reinforced vinyl rails with Model 1.3" square vinyl balusters and a pre-attached aluminum deckboard receiver on the top rail, so you can fasten a matching or contrasting deckboard (not included) to create a smooth, usable surface along the rake. With 36" and 42" height options, 6' and 8' stair lengths, and rail colors like White, Almond, Clay, and Black, these 400 Series stair sections make it easy to complete a cohesive, entertaining-friendly railing system from landing to landing.

Why Choose This Stair Section

• Continuous drink rail look down the stairs — Using 400 Series Model stair sections lets you maintain the same deckboard-topped rail from level runs onto stairways, creating a consistent, upscale perimeter.
• Flexible guard height options — Two heights (36" and 42") help you match local codes and design goals, whether you are working on a backyard deck or an elevated balcony.
• Sturdy, low-maintenance design — Vinyl rails and balusters with aluminum reinforcement resist rot, rust, and peeling paint, reducing lifetime maintenance compared to many wood systems.
• Clean Model baluster aesthetic — The 1.3" square vinyl balusters give your stairs a straightforward, squared-off look that pairs well with many home styles and composite decking.
• Ideal for entertaining spaces — Once a deckboard is installed on the receiver, the stair rail becomes a convenient perch for drinks and small items, enhancing how people use the stairs during gatherings.
• Engineered as part of a system — 400 Series stair sections are part of a deckboard-ready family of rails that is third-party evaluated for IBC/IRC guard use when installed following current code reports and instructions.

Specifications

Installation

Start by planning your stair layout and marking post locations at the top and bottom of the stair run and at any intermediate landings, following local building codes. Install structural post mounts and 4" vinyl post sleeves so that posts are plumb, aligned with the stair stringers, and anchored to the framing per Superior's guidelines. Measure the post-to-post opening along the stair rake and cut the 6' or 8' 400 Series Model stair section to length if needed, preserving the required rail engagement for the stair brackets. Attach the included 32°–36° stair mounting brackets to the posts at the correct heights for your chosen (36" or 42") guard, then seat the aluminum-reinforced top and bottom rails into the brackets and fasten them with the supplied screws. Install the 1.3" square Model vinyl balusters into the routed or pre-punched openings according to the installation guide, keeping spacing consistent along the rake. Finally, fasten a compatible deckboard (not included) to the aluminum deckboard receiver on the top rail using the recommended fasteners and predrilled holes, and complete the project with matching post caps and base trim.

Buying Guide

• Confirm required stair height — Check your local building code to determine whether 36" or 42" stair guards are required, then select the appropriate 400 Series stair height for the project.
• Choose 6' vs. 8' sections — Use 6' sections on shorter or more complex stair runs; choose 8' sections to reduce post counts and hardware on longer, straight runs.
• Plan the deckboard top — Decide whether you'll match your deck surface or use a contrasting deckboard for the drink rail; confirm board thickness and follow Superior's fastening recommendations.
• Coordinate with level sections — Pair 400 Series Model stair sections with 400 Series Model level sections in the same height and color so the deckboard-ready top rail looks uniform around the entire perimeter.
• Select posts, caps, and trim — Choose 4" post sleeves, compatible post mounts, and post caps and trim (plain, classic, modular, etc.) that match your 400 Series color scheme.
• Verify angle and bracket needs — The included brackets fit 32°–36° stairs. If your stair pitch falls outside this range or you have ramps, consult Superior's bracket options for alternate hardware.

Frequently Asked Questions

What heights and lengths are available for 400 Series Model stair sections?

400 Series Model stair sections are available in 36" and 42" guard heights and in 6' and 8' lengths for standard stair runs, and can be cut to fit between posts.

Do these stair kits include the deckboard for the drink rail?

No. The top rail comes with a pre-attached aluminum deckboard receiver, but the deckboard itself is supplied by you so you can match your existing deck or create a contrasting accent.

What stair angles do the included brackets support?

The supplied 400 Series stair mounting brackets are designed for typical residential stair pitches in the 32°–36° range. For non-standard angles or ramps, consult Superior for compatible universal brackets.

What comes in a 400 Series Model stair section box?

Each boxed kit generally includes the vinyl top rail with aluminum deckboard receiver, vinyl bottom rail with aluminum insert, Model 1.3" square vinyl balusters, stair mounting brackets with screws, and an installation guide.

Are posts, caps, and trim included with the stair section?

No. Posts, structural post mounts, post caps, base trim, deckboards, and gates are sold separately so you can configure the system to your needs.

Is the 400 Series stair railing code compliant?

400 Series railing is engineered and third-party evaluated as a deck and porch guard system for IBC/IRC applications when installed according to current code reports and Superior's installation instructions. Always confirm specifics with your local building authority.

Comparison

If you need help pairing 400 Series Model stair sections with matching level sections, choosing between 36" and 42" heights, or assembling a full package with posts, caps, and trim, please contact us and our team will be happy to assist.