1) it's weathertight steel door with round window
2) the main material is steel
3) clear size of opening about window is 250mm

1) it's weathertight steel door with round window.

2) with three steel handles.

3) window's clear size of the opening is 250mm.

4) door's clear size of the opening is 1700*750.

5) the thickness of the door is 6mm.

6) according to standard GB/T3477-1996 to produce.