Area is not enough

The same area arranged wider or taller changes hinge loading, deflection, center of gravity and safe closing reach.

Glass make-up changes weight

Insulating, laminated, tinted and thicker glass add different weights and may change frame, hinge and strut requirements.

Struts are matched to the sash

Force, stroke, mounting points, opening angle and temperature behavior are selected for the complete sash rather than a generic window size.

Large requests need another path

A very wide sash may require reinforcement, mullions, paired units or motorized operation after engineering review.

Turn the guide into a real opening schedule.

Keep every dimension, option, pressure, document, and delivery note connected to the same opening ID.

Start the configuration

Questions about this topic

Can I replace gas struts with a stronger pair later?

Strut force and geometry affect safety, hinges, frame and closing effort. Use the approved replacement specification rather than choosing by force alone.