Sliding window
A window whose sash slides sideways to open. The plan shows two sash lines side by side, offset from each other.
This explains what a symbol represents on a drawing. Conventions vary between firms and standards, and a drawing's own legend takes precedence.
How to read it
Horizontal sliding windows are one of the principal window types in the Navy's Builder 3 & 2 course. The sash moves along the line of the wall, so no swing is drawn (TM 5-704). The window mark beside the symbol, a number in a diamond under the A/E/C Graphics Standard, points to the window schedule, which gives the exact unit.
Also searched as: gliding window, slider window.
Look-alikes
A double-hung window slides up and down instead. The Army's manual notes that this movement can't be shown in plan, so its sash lines sit side by side without the offset.
More blueprint symbols
Sources
- Builder 3 & 2, Volume 2, NAVEDTRA 14044, Naval Education and Training Command, U.S. Navy, ch. 4, windows
- A/E/C Graphics Standard, Release 2.2, ERDC/ITL SR-23-1, U.S. Army Engineer Research and Development Center, CAD/BIM Technology Center, sec. 3.3.5
- Construction Print Reading in the Field, TM 5-704 / AFM 85-27, Departments of the Army and the Air Force, para. 2-2a
Last reviewed September 24, 2026 by Rory Hansen. How we research