KING Sliding Door Gear - Making the Right Choice

21 January 2021

KING Tubular Door Track is manufactured from high quality cold rolled steel strip galvanised to BS 2989. It is available in standard lengths of 1.8m, 2.0m, 2.5m, 3.0m, 4.0m, 5.0m and 6.0m

At FWB, we stock a wide range of King sliding door gear, including track, brackets, hangers, guides, door stops and more.

When selecting sliding doors, there are a few factors to consider:

• The purpose of the building and the floor construction
• Whether the application is internal or external
• Top fixing or face fixing
• Opening dimensions
• The number and thickness of the door leaves
• Timber or steel door leaf construction
• The weight of each door leaf
• The height of the door

Selecting Track Size

The required track size is determined by the weight and/or height of the door. The following guidelines should be followed:

Determining the Weight of your Door

Timber: Typical softwood doors of framed, ledged and braced construction, filled with 16mm tongued, grooved and vee jointed matchboard weigh approximately:

• 50mm nominal thickness = 22kg/sqm
• 64mm nominal thickness = 25kg/sqm
• 76mm nominal thickness = 29kg/sqm

Metal: Due to the variety of materials and construction methods used, metal door weights should be measured using exact calculations.

Determining the Size of your Door

To correctly measure the size of your door, ensure the following:

• Jambs should be overlapped by 50mm to 76mm
• Lintels should be overlapped by 25mm to 40mm
• Ground Clearance should be 10mm
• Passing Doors should overlap by 64mm

With the above in mind, the recommended track sizes are as follows:

Track Size 0– load capacity 115kg per leaf and max height of 2700mm

Track Size 1 - load capacity of 200kg per leaf and max height of 3300mm

Track Size 2 - load capacity of 454kg per leaf and max height of 4900mm

For larger and/or heavier doors, please contact our sales department.

Track Dimensions: