Fire-Rated Ceiling Suspension Systems

Premium butt end T-bar ceiling grids engineered for superior fire resistance and easy installation

Fire rated - butt end

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Fire rated - butt end
Fire rated - butt end

Introduction

Our ceiling suspension grids are double web cold-rolled sections, manufactured from hot-dipped galvanized steel, conforms to JIS G3302 SGCC. The tees section is with pre-painted capped. It is given to ensure that the system is manufactured to a very high quality level.

The Main Runner is slotted for cross tees at 150mm or 6" centers to give maximum flexibility in the ceiling lay out.

Types of combination

1200 x 600mm SIZES
DOUGLAS ceiling suspension grids comprises main runners installed at not more than 1200mm centers, securely fixed by pre-straightened suspension wire. The wire shall not more than 1500mm from the main runner splices, or expansion joints, and the maximum distance from the wire to the perimeter of the ceiling shall not exceed 450mm and otherwise at 1200mm centers.
Also, the main runners splices are to be staggered and not less than 450mm from the perimeter. Spanning between main tees are 1200mm cross tees at 600mm centers.

600 x 600mm SIZES
Same mentioned above, only add: 600mm cross tees spanning between 1200mm cross tees 600 module.

Ceiling suspension grid Ceiling suspension grid

Specification

  • Butt end, color : White

System consists of

G.I. : 0.35mm / Main Runner: 38mm (height)

ItemSize in metricSize in imperialG.I. thicknessDimension
Main Runner 3.6M (3600mm)12FT (3660mm)0.35mm24x38mm
Cross Tee1.2M (1200mm)4FT (1220mm)0.35mm24x38mm
Cross Tee0.6M (600mm)2FT (610mm)0.35mm 24x38mm
Wall Angle  3.6M (3600mm)0.40mm 22x22 / 24x24mm
Wall Angle  3.0M (3000mm)0.40mm 22x22 / 24x2

Advantages

  • It is economical, easy to install, using less labor to complete the installation at minimum time as compared with conventional extruded aluminum tee system.
  • Interchangeability of main and cross tees between systems, promotes lower inventory requirements and greater field flexibility.
  • The straight entry locking feature of the section allows the system to be installed easily within close proximity of the overheads.
  • The system promotes complete designs flexibility and it is capable of sustaining of loads normally designed into suspended tee system (refer to load table)
  • Overlap type of cross tee provide complete flush joint, eliminating gaps between main runner and cross tees and ensure rigidity at fixtures.
  • In line cross tees provide true double-lock action.
Ceiling suspension grid

Fire expansion joint within each length of main runner.
Ceiling suspension grid
Before Fire

Effect after exposure to fire conditions.
Ceiling suspension grid
After Fire

Ceiling suspension grid Assembly System

Installation Steps

  • Step 1: Measuring and planning: Determine the lines for main runners and cross tees in such a way that tiles about the wall are at least half a tile (300mm)
  • Step 2: Mark the desired ceiling height: Measure and mark the walls at all corners above the installation level. Snap a chalk line and test for level.
  • Step 3: Inserting a nail between the wall and the wall angle at marked location serves as a good anchor for this purpose. Check to be sure the cross tee string is at 90°
  • Step 4: Attach the main runners to the hangers
  • Step 5: Install cross tees, assuring that they are adequately connected to main runners
  • Step 6: Lay in panels, beginning at one corner and completing row by row.

Assembly
Each tee grids must be fitted always in the left position (Grey Color) of the slot. Hear the sound "Click"!

Disassembly
Need no tools!
Push, through the left thumb.
Then the tee's edge and simultaneously we pull the tee with our right palm.

Main Runners Disassembly
The disassembly must be done by a screwdriver with a slim tip.

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How Does DOUGLAS Fire-Rated Ceiling Grid System Perform During Fire Conditions?

Our ceiling suspension grid system includes engineered fire expansion joints within each main runner that activate during fire exposure. When subjected to extreme heat, these specialized joints expand in a controlled manner, maintaining structural integrity longer than standard systems. This critical feature gives building occupants valuable additional evacuation time while helping to contain fire spread between compartments. Contact us for detailed fire rating certifications and performance specifications for your specific application requirements.

Our fire-rated ceiling grid system delivers remarkable advantages over conventional options, including economical installation with reduced labor requirements, complete design flexibility, and superior load-bearing capacity. The innovative straight entry locking feature allows for easy installation near overheads, while the overlap type cross tees create flush joints that eliminate gaps between components. The system's double-lock action ensures exceptional rigidity and stability, making it the preferred choice for architects, contractors, and building owners who demand superior performance and safety in their ceiling installations.

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