Timberline Twin Wheel Assembly.

Stainless Steel body with Stainless wheels. 100kg each
Designed specifically for patio timber frame glass doors that require the smooth operation of a tandem (two) wheel adjustable roller combined with aluminium head guide and track or manganese bronze track
The tandem wheels reduce wear and tear by distributing door weight evenly

Horizon   Suits doors 25mm thick
The Horizon is a mid-weight system designed for use on internal doors up to 120kg (steel wheel) and 60kg (nylon wheels).
The simple-to install design has a nylon wheel option for noise reduction or a steel wheel option for heavier weight capcity

Timberline  Suits doors 30mm thick
This system features a 316 Stainless steel housing with a manganese bronze tyre for increased wheel longevity and a 200kg weight capacity.
With an 8mm, end height adjustment mechanism, this sheave can be adjusted once the door is in place.
Suitable for external use, particularly patio doors and other heavy duty applications.