Premium T-15 Heavy Duty Ceiling Suspension Grid System

High-performance double web cold-rolled ceiling grid system with superior load capacity and fire resistance

Ceiling suspension grid (T-15/Heavy Duty)

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Heavy duty

Ceiling suspension grid (T-15)
Ceiling suspension grid (T-15)

DOUGLAS 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. We use only the high quality level galvanized steel also pre-painted galvanized steel supporting with high performance production equipment, to ensure the accurate sizes and locking quality.

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

We are holding the 3rd party issued test report which was tested under ASTM C637 to tell its good loading capacity.

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

  • Overlap, color: White

System consists of

G.I. : 0.30mm / height : 38mm

Item Size in metric Size in imperial G.I. thickness Dimension
Main Runner 3.6M (3600mm) 12FT (3660mm) 0.30mm 15x38mm
Cross Tee 1.2M (1200mm) 4FT (1220mm) 0.30mm 15x38mm
Cross Tee 0.6M (600mm) 2FT (610mm) 0.30mm 15x38mm
Wall Angle 3.6M (3600mm) 0.40mm 14x20mm
Wall Angle 3.0M (3000mm) 0.40mm 14x20mm

G.I. : 0.27mm / height : 38mm

Item Size in metric Size in imperial G.I. thickness Dimension
Main Runner 3.6M (3600mm) 12FT (3660mm) 0.27mm 15x38mm
Cross Tee 1.2M (1200mm) 4FT (1220mm) 0.27mm 15x38mm
Cross Tee 0.6M (600mm) 2FT (610mm) 0.27mm 15x38mm
Wall Angle 3.6M (3600mm) 0.40mm 14x20mm
Wall Angle 3.0M (3000mm) 0.40mm 14x20mm

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 Can DOUGLAS T-15 Heavy Duty Grids Reduce Installation Time and Labor Costs?

Our T-15 Heavy Duty system is engineered specifically for rapid deployment, featuring straight entry locking that allows installation even in tight overhead spaces. Contractors report up to 30% faster installation compared to conventional extruded aluminum systems, with complete interchangeability between components minimizing inventory needs and maximizing field flexibility. The overlap design creates flush joints automatically, eliminating time-consuming adjustments while ensuring superior structural integrity under load.

The system offers remarkable versatility with both 1200x600mm and 600x600mm configurations, making it ideal for commercial and institutional applications. Installation is streamlined with our innovative straight entry locking feature and complete interchangeability between components, reducing inventory requirements and enhancing field flexibility. The overlap-type cross tees create seamless flush joints that eliminate gaps and ensure fixture rigidity, while the built-in fire expansion joints provide crucial safety features. With 26 years of industry experience, DOUGLAS delivers ceiling solutions that combine economy, durability, and aesthetic appeal for discerning building professionals worldwide.

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