Boat Lifts, Docks, Repairs Parts and Accessories!
NEW Canopy Covers

4' x 12' ShoreMaster RS4 Dock Frame

Manufacturer: ShoreMaster

Product MPN: 1005987

Model: 1005987

Series: Infinity RS4

Item Type: Dock - Freestanding

Construction: All-Aluminum Welded

Decking Options
Dock Post Selector
On Sale For: $959.00


The 4' x 12' RS4 dock frame is mainly used with dock designs that wrap a boat lift when a 12' wide slip or well is needed.  Boat lifts that have a 120" wide inside width require at least an 11' wide opening, so the 12' wide sections works very well and gives a little bit of wiggle room.  The dock frame includes stainless bolt hardware and two dock connection brackets.  The connection brackets are very easy to install and once installed the first time, there is no need for tools during seasonal removal and install.

ShoreMaster Infinity RS4 sectional freestanding dock system is a popular choice among many waterfront owners.  The sectional light-weight yet rigid all aluminum welded frame construction offers a unique style and design that is not commonly found in most sectional aluminum dock systems.



  • Unlimited Configurations
  • Light Weight Aluminum Design
  • Stainless Steel T-Handle Connections
  • Removable Decking
  • Strong 4" Side Rails with Fully Welded Ends
  • Easy to Customize - Quick Connect Accessory System
  • Stainless Steel Fasteners and Brass Fasteners
  • 11 Decking Options
  • 5 Sided Dock Posts provide 3 Points of Contact

The RS4 line by ShoreMaster is one of the most customizable docking systems available today.  RS4 Infinity systems offer several section sizes including the signature round curve dock sections allowing for curved transitions and round/oval shaped platforms not found with competing systems.  RS4 sectional dock features interior mounted leg pockets that keep your supporting legs inside the section footprint while allowing for a flush decking surface with no unsightly leg posts extending up past the decking.



Unlike most sectional dock systems, the RS4 Frame sections offer one of the widest selections of various drop-in decking options in the industry. Decking panels are available in several durable materials each with an unique appearance and finish. Choose from:

Cedar Decking

Premium Cedar - ShoreMaster Cedar decking panels are made with more heartwood so you get decking that will last longer and look great with minimal maintenance.  Nothing feels better to walk on than the soft, natural beauty of cedar decking.  Panels come in 2' panel lengths and require six panels per 4' x 12' RS4 dock frame.
White Aluminum Decking

White Aluminum - Powder-coated in brilliant white, you will get a clean, modern-looking surface that stays cool to the touch even on hot summer days.  The treaded surface provides you with a safe, cool-to-the-touch decking option that is comfortable to walk upon.  Panels come in 2' panel lengths and require six panels per 4' x 12' RS4 dock frame.
Tan Aluminum Decking

Tan Aluminum - The Tan Aluminum decking is among the more popular decking options offered for the RS4.  Powder-coated in natural tan, you get an attractive decking option to complement your waterfront property.  Tan aluminum decking features a treaded surface that stays cool to the touch and is comfortable to walk upon.  Panels come in 2' panel lengths and require six panels per 4' x 12' RS4 dock frame.
Woodgrain Aluminum Decking

Woodgrain Aluminum - You are looking for that natural look of real wood but you want it to be maintenance free?  Woodgrain aluminum decking give you just that.  Woodgrain powder coated aluminum decking will not rot, twist, warp or decay so your dock will look like new year after year.  Panels come in 2' panel lengths and require six panels per 4' x 12' RS4 dock frame.
Weathered Woodgrain Aluminum Decking

Weathered Woodgrain Aluminum - So you are looking for that natural look of real weathered wood but you want it to be maintenance free and with no splinters?  ShoreMaster now offers beautiful Weathered Woodgrain aluminum decking panels that will not rot, twist, warp or decay so your dock will look weathered year after year.  Panels come in 2' panel lengths and require six panels per 4' x 12' RS4 dock frame.
Flow Through Decking

Flow Through - Light weight and slip resistant, Flow Through is one of the easiest decking options to own because of the open concept of the design does not collect much dirt or debris which helps keep it clean.  The slip-resistance surface is unmatched and allows you to safely enjoy your dock and comes in gray or tan.  ShoreMaster did change this decking (from Titan) in 2017 to a different design, but we have both options available.   Panels come in 2' panel lengths and require six panels per 4' x 12' RS4 dock frame.
Vertex Decking

Vertex - Exclusive to ShoreMaster, Vertex decking is a maintenance-free decking option that is truly unique.  The decking has a flagstone pattern and feels smooth on bare feet. It is incredibly slip resistant and once you have walked on Vertex decking, you won''t want anything else.  Panels come in 2' panel lengths and require six panels per 4' x 12' RS4 dock frame.

Each panel is specifically designed to fit the 4' wide RS4 dock frames.  The panel uses plastic clips with stainless steel screws to lock into position. You can also choose to provide your own decking.



The RS4 systems give you the option to have post or no post sticking up above the surface of the dock.  The majority of our systems are installed utilizing the under dock support and have no posts sticking up above the surface of the dock, but you do have the option.

5 Sided Dock Post

5 Sided Dock Post - The dock uses a 5 sided aluminum post for the leg and when the T-handle on the leg pocket is tightened, there are 3 points of contact that keep the leg from slipping. We recommend measuring your water depth every 10' that you are going out into the lake.  This allows you to better determine the post lengths you will need.  We can also assist you in determining leg length for your dock, once these measurements are taken.


QC Bracket - ShoreMaster uses a Quick Connect accessory bracket system for many of their more popular accessories and makes it very easy to install, remove or relocate accessories without tools.  The bracket fits onto the RS4 stringer and tightens using a stainless steel T-handle, no tools required!  Below is a list of available accessories that use this Quick Connect system.

  • Canoe / Kayak Rack
  • Dock Bench
  • Dock Bumpers
  • Dock Furniture
  • Dock Stairs or Steps
  • Flip-Up Swim Ladder
  • Fishing Pole Holder
  • Flag Pole Holder
  • Handrail
  • Ramp
  • Umbrella Holder


  • This product requires freight delivery or local pickup from our location
  • Product assembly is required
  • Product requires 7 to 10 days to ship
Manufacturer: ShoreMaster
SKU: 1005987
Typically Ships: 7-15 Business Days
Shipping Method: LTL Freight, Pickup
Base Group
Product MPN: 1005987
Model: 1005987
Series: Infinity RS4
Restocking Fee: Yes
Return for refund within:: 30
Return for replacement within:: 30
Frame Spec
Frame Material: Aluminum
Quick Info
Section Width: 4
Section Length: 12
Design: Traditional Sectional
Fasteners: Stainless/Brass Combo
Item Type: Dock - Freestanding
Part Type: Dock Frame
Construction: All-Aluminum Welded
Designed to Fit: ShoreMaster RS4 Infinity Dock
Base Pads: Aluminum Base Pads (2)
Fits Post Size: ShoreMaster 5-Side Legs
Warranty: 15 yr Structural
Support Spec
Includes Legs: No
Manufacturer Info
Manufacturer Website: Manufacturer Website
Product Manual: View Product Manual
Part Compatibility
Compatible ShoreMaster Decking: ShoreMaster 2'x45" or 1'x45" Panels
Section Connect Hardware: T-Handle Connector Clip (2)
Compatible Accessory Bracket: RS4 QC Accessory Bracket
Side Stringer Size: 4
You May Also Like These Items

1657 12th Street - Martin, MI 49070

Phone: 866-942-6349

Fax: 866-942-6349