Skip to Product Info
    • Alumistair 7 Step Aluminum Stairs
    SKU: AS7

    Alumistair 7 Step Aluminum Stairs

    Regular Price $2,034.50
    Shipping calculated at checkout.
    Item # AS7
    • Alumistair 7 Step Aluminum Stairs
    • Tread Width: 29-1/4" (standard) / 34" (wide)
    • Overall Width: 34-1/2" (standard) / 36" (wide)
    • Riser Height: 8-1/2"
    • Lightweight, corrosion-resistant marine-grade aluminum
    • Includes top-side mounting stair bracket
    • Package quantity: 1 set
    • Ships LTL / Motor Freight

    Typically Ships in 2 to 4 Weeks

    Payment & Security

    Your payment is secure. We don’t store or see your card details.

    • Amazon
    • American Express
    • Apple Pay
    • Diners Club
    • Discover
    • Google Pay
    • Mastercard
    • PayPal
    • Shop Pay
    • Visa
    Description
    Alumistair Aluminum Stairway provides a lightweight and strong stairway solution for docks, seawalls, and transitions from deck to deck or deck to waterfront access. Constructed from corrosion-resistant marine-grade aluminum, these stairs add value and provide safe, durable waterfront access for many years to come. The Alumistair AS7 aluminum stairs provide a solid solution for dock to water, seawall to shore, deck to deck, and deck to waterfront access. 2–4 week lead time (built to order in USA), standard climb angle 45° (35–55° available by request), ships LTL / Motor Freight (LTL Freight Carrier recommended via NetSuite + Pacejet integration), requires 2 people to carry and install. Non-skid tread depth is 7", riser height 8-1/2", handrails are 1-1/4" OD round tube with mid-rail, standard tread width 29-1/4" (wide: 34"), standard overall width 34-1/2" (wide: 36"), includes stair bracket for top-side mounting. Overall dimensions: Rise 59.5", Run 59.5", Length 84", Riser 8-1/2", Overall Width 31-1/4" (standard) / 36" (wide), Inside/Tread Width 29-1/4" (standard) / 34" (wide).


    Compare every style in our dock ladders range to find the right fit for your dock.
    Additional Info
    Item #:AS7
    Type:Aluminum Stairway
    Material:Marine-Grade Aluminum
    Tread Width:29-1/4" (standard) / 34" (wide)
    Overall Width:34-1/2" (standard) / 36" (wide)
    Riser Height:8-1/2"
    Tread Depth:7"
    Handrail:1-1/4" OD round tube with mid-rail
    Includes:Top-side mounting stair bracket
    Weight:110 lb *
    Length:84" *
    Inside Width:29-1/4" (standard) / 34" (wide) *
    PDF Guides
    AlumiStair_Stair_Assembly Download
    AlumiStair_Stair_Bracket_Diagram Download
    Docks aerial shot bay city

    Why Choose Dockbuilders?

    With nearly 30 years of experience, Dock Builders Supply delivers dependable marine construction materials for projects of all sizes. Our products are selected with precision for durability, performance, and real-world dock applications.

    Backed by a knowledgeable team and supported with detailed estimates and drawings, we help you plan with clarity and build with confidence — from residential docks to large-scale marina installations.

    How It Works

    • Slidemoor systems

      Plan & Design

      Share your dock goals, and we’ll create a custom layout and materials list.

    • Dock Builders Supply 40' to 65' Boat Length Heavy Duty Take-A-Part Mooring Whips - mooring whip

      Select Components

      Choose durable, marine-grade parts tailored to your design.

    • Dock over lake aluminum

      Ship & Build

      We ship your supplies with secure, efficient delivery.