John A. Russell (Joinery) Ltd (trading as Russell Timber Technology) is a Glasgow-based family business dating back to 1888. They manufacture, supply and install quality, precision-engineered timber and aluminium-clad windows, doors, fire doors and façades. They manufacture windows and doorsets to meet a range of performance requirements, including PAS 24 for Secured by Design along with noise reduction and acoustic performance.  They undertake work in many industry sectors including social housing, new builds, renovations and private developments.