How they open

Single-hung windows operate from the lower sash. Double-hung windows operate from both upper and lower sashes.

Ventilation and cleaning

Two operable sashes create more ventilation choices and may offer tilt-in cleaning. Features and travel vary by product.

Hardware and cost

Double-hung systems use more balances, locks, seals and moving parts. The exact price difference depends on size and options.

Architecture

Both suit traditional proportions. Meeting-rail position, sash ratio, grid pattern and frame profile may matter more visually than operation alone.

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

Is double-hung always better?

No. A single-hung may meet the ventilation, cleaning and budget goals with fewer moving parts. Choose from the opening and how it will be used.