FIX window with bent stainless frame. It is used when antiweatherability is required and when using panels thicker than 50mm. Frames are pressed form both sides to accommodate combinations of F frame of flat configuration, Z frame that is bent in a staircase pattern, and V frame of tapered configuration. Proper use of frame configuration is possible according to the panel thickness and condition of the rooms for which it is used.

| Model | FZU |
|---|---|
| Effective dimension | W280 - 2400 H280 - 2400 |
| Up to 3 square meter in effective area |
| Model | FZU |
|---|---|
| Frame | Stainless |
| Frame configuration | Combination of F type (flat), Z type, and V type (tapered) |
| Supported panel thickness | 3mm - |
| Face plate thickness | Up to 3 square meter in effective area |
| Face plate fixing method | Fixed by insertion between frames |
| Fixing method to panel | Fixed by tapping screw (foundation required) or by rivets (foundation not required) |