A valuable aid to instruction and coaches, underwater observation windows are relatively easy to build into swimming pool and diving pool under construction and virtually impossible to add afterwards. They are extra heavy duty, engineered for safety and minimum optical distortion. Framing and hardware are stainless steel, with glazing made of Bullet Resistant Glazing. Far safer than tempered glass, these glazes are specified for use in military underwater applications. All windows are shipped factory sealed and pressure tested.
There are two kinds: Recutangular underwater observation window and Round underwater observation window.

Recutangular underwater observation window:
1. Length/height: 900mm, width: 900mm
2. Length/height: 1200mm, width: 900mm
Round underwater observation window: Diameter: 565mm