Precision Steel Rail Screed Support for Structural Concrete, Industrial Floors & Elevated Decks

MADE in USA

Precision Steel Rail Screed Support for Structural Concrete, Industrial Floors & Elevated Decks

Best For: Slab-on-Grade, Elevated slabs, Metal deck pours, Wood deck pours, Concrete overlays, Vapor barrier slabs, Drains, Rail Critical, High FF/FL Floors, Tennis Courts, Gymnasims, Swimming Pools, Waterways, Performance concrete, Pan Decks, Sloped slabs, Tunnels, Super Thick Floors, Manufacturing plant slabs, Embankments, Bridge decks and infrastructure projects, Super flat floors requiring FF/FL compliance and more.


SYSTEM SCREED TYPE KEY COMPONENTS
An orange JAWS RailFin Screed Chair, a tool used in masonry for smooth concrete surfaces.SHOP NOW

JAWS RailFin

 1/4" flat rolled steel rail

RailFin + mounting structure

Not compatible with MAKO Driver

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JAWS RailFin + FinStand + Driver

1/4" Flat Rolled Steel Rail

Up to 1.75" of vertical adjustment 

FinStand + threaded rod + RailFin (nut & washer optional)

Not compatible with MAKO Driver

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JAWS RailFin + FinStand + Base Plate + Driver

1/4" Flat Rolled Steel Rail

Up to 1.75" of vertical adjustment 

Base Plate + FinStand + threaded rod + RailFin (nut & washer optional)

Not compatible with MAKO Driver


SYSTEM SCREED TYPE KEY COMPONENTS
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JAWS RailFin + CoilStand + Driver

1/4" Flat Rolled Steel Rail

Up to 1.75" of vertical adjustment 

FinStand + 1/2" x 6 thread - right hand coil rod + RailFin (nut & washer optional)

Not compatible with MAKO Driver

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JAWS RailFin + CoilStand + Base Plate + Driver

1/4" Flat Rolled Steel Rail

Up to 1.75" of vertical adjustment 

Base Plate + FinStand + 1/2" x 6 thread - right hand coil rod + RailFin (nut & washer optional)

Not compatible with MAKO Driver

 

Its patented internal “fins” in each MAKO screed chair hug the mounting structure so the chair will not bounce off rebar or rod during concrete placement.

SPECIFICATIONS:

Packaging: 100 pieces per bag - Approximately 3,000 sq ft coverage per bag

Spacing: Typically every 3-4 feet (1 meter) depending on screed weight, pour span and subgrade. Always test conditions prior to placement.

Mounting Structure Compatibility: 1/2". 13 thread for the FinStand, 1/2" x 6 thread for the CoilStand

Material: Impact-resistant medical grade polypropylene

Minimum Slab Thickness: Varies by chair and mounting structure

Country of Origin: Made in USA

Why Do Contractors Choose MAKO Screed Chairs?

✔ Fully Adjustable System
Fine-tune slab elevation before placement.

✔ Stay-in-Place Design
No removal. No patching. No callbacks.

✔ Patented Internal Fin Technology
Internal fins grip mounting structure to prevent bounce during placement.

✔ Field Proven Performance
Used on infrastructure, industrial, super flat, and DOT projects.

Compliance, Approvals & Patents

  • Standards: ACI 302.1R-04, ACI 117, ASTM E1155
  • Approvals: Iowa DOT approved (other states pending)
  • Patents: 8,096,182 | 8,544,182 | Patent Pending