Why choose WeatherLok? - Every WeatherLok product goes through a rigorous process of quality control to be certain it meets our superior standards. In our ceaseless pursuit of excellence, WeatherLok continually looks for ways to make the best even better. This means ongoing research and development and constant engineering advances. We do all of this so that our vinyl windows and doors stand up to the ultimate building standards - yours.

Warranty information
WeatherLok Glass Breakage.pdf - 48373 bytes
WeatherLok Replacement.pdf - 78776 bytes

Performance Data
WeatherLok Thermal Test Report.pdf - 7915 bytes

Glass Information
Cardinal Loå2-272 Glass - 3038684 bytes

Feature Sheets
WeatherLok Series 3100 Feature Sheet.pdf - 117601 bytes
WeatherLok Series 3201 Feature Sheet.pdf - 116654 bytes
WeatherLok Series 3301 Feature Sheet.pdf - 132288 bytes
WeatherLok Series 3500 Feature Sheet.pdf - 125967 bytes