marine windows
A60 welded opening porthole;A60 fire-resistant porthole;Marine porthole;Marine standard rectangular window;Platehouse fixed rectangular window;A60 fire-resistant rectangular window;A60 fire-resistant opening rectangular window;Marine aluminum alloy double-glazed soundproof window;Aluminum sliding window
Definition of Window Opening Direction
Viewed from the window opening side
If the hinge is on the left, it is a left-opening (L) window; if the hinge is on the right, it is a right-opening (R) window.
When looking directly at the opening surface of the inner window of the shielding frame
the shielding window hinge on the left is a left-inward opening (A1) window, and the shielding window hinge on the right is a right-inward opening (A2) window, as shown in the figure below.
Top-hinged (T) type, where the glass window hinges at the top of the opening window
Definition of a sliding window
An observer stands inside and looks out of the window.
When the window is opened from a closed position, a sliding window that moves to the left is a left-hand sliding window (R-type), and a sliding window that moves to the right is a right-hand sliding window (R-type).















