In 1969 Ellis Pearson developed and installed the first glass backwall in the world at Abbeydale squash club in Sheffield. Since then many thousands have been installed throughout the world. Ellis Pearson glasswalls were the first to meet the International Squash Rackets Federation specification, now known as the World Squash Federation. Ellis Pearson glasswalls can also be made to suit bespoke situations where nonstandard sizes are required. The design would be based on the freestanding or Clubwall alternative. The range also offers glass doors to fit into existing courts.