Crittall Windows Ltd collaborated with Anthony Purdy on the garden design The Rhythm of Rainwater.

Founded in the 1800's, CRITTALL WINDOWS Ltd was the pioneer of hot-rolled steel windows and was responsible for setting up the first steel window manufacturing plants in the United States and around the world. Crittall is the world's oldest and largest steel window manufacturing company today.Crittall is equally active in new construction and refurbishment. Projects range from replacing thousands of landmark sensitive 1920's windows to supplying windows for the most contemporary buildings designed by today's foremost architects. No other manufacturer of steel windows offer as comprehensive a range of hot rolled sections. This ensures maximum custom capability and responsiveness to individual project requirements.