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

MADE in the USA

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

SYSTEM IMAGE SCREED TYPE KEY COMPONENTS

JAWS RailFin

An orange JAWS RailFin Screed Chair
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1/4" flat rolled steel rail RailFin + mounting structure
Not compatible with MAKO Driver

JAWS RailFin + FinStand + Driver

JAWS RailFin FinStand
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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

JAWS RailFin + FinStand + Base Plate + Driver

JAWS RailFin FinStand Base Plate
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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

JAWS RailFin + CoilStand + Driver

JAWS RailFin CoilStand
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1/4" Flat Rolled Steel Rail
Up to 1.75" of vertical adjustment
CoilStand + 1/2" x 6 thread right hand coil rod + RailFin (nut & washer optional)
Not compatible with MAKO Driver

JAWS RailFin + CoilStand + Base Plate + Driver

JAWS RailFin CoilStand Base Plate
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1/4" Flat Rolled Steel Rail
Up to 1.75" of vertical adjustment
Base Plate + CoilStand + 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

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, Gymnasiums, 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.

Why Do Contractors Choose MAKO Screed Chairs?

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

Stay-in-Place Forms. 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