Shop drawings (hand-sketched or CAD) describe a unit so it can be re-built in OpenJanela.
This chapter covers how to read the symbols and dimensions on a drawing.

What a drawing must convey

• Series — which product line to build in. (If absent, the series selected on screen is used.)
• Internal dimensions — overall internal size plus divider positions, in the drawing’s UOM.
• Dimension reference — frame edge to the centre of a coupler/mullion. Vertical dividers are dimensioned from the left edge; horizontal dividers from the top edge.
• View side — in or out (default out). The view side mirrors/swaps left↔right and awning↔hopper symbols.
• R.O. vs H.D. — drawings often quote both the Rough Opening and the unit / Hold-Down size. Build to the H.D. (unit) size.

Operator symbols → opening type

General rule: triangle = casement/awning/hopper; X = fixed; straight arrow = sliding.
The triangle apex points to the handle/leading edge; the hinge is the opposite jamb.

Couplers vs mullions vs interlocks

• Coupler joins two separate frame units (splits a facet into independent openings). Drawn as an arrowhead on the divider line, or as two adjacent frames “stuck together.”
• Mullion subdivides within a single frame.
• Interlock / meetrail is the boundary inside one sashtype between its leaves (drawn inside the sashtype outline).

Dimensioning model

Dimensions mirror the model hierarchy (Overall → Facet/Frame → Opening/Sash →
leaves). Typical placement: total W across the top, total H down the left;
per-column width above each column, per-row height to the left of each row. Splits can be given
as sizes (each column width / row height) or as running positions (frame edge to
divider centre) — the two are interchangeable.

Dimensioning inside a sash (web configurator)

To see or change the sizes inside one sash — for example a sash split by a mullion:

1. Open the Dimensioning panel and click Sash under Level. The cursor turns
   into crosshairs and the drawing shows Click the sash to dimension.
2. Click the sash you want. Only one sash is selected at a time; the crosshairs go away once it
   is picked. To pick a different sash, click Sash again.
3. Choose the measure (Op Nom., Op Actual, Glass or DLO). The rulers now
   show that sash’s own openings, and typing a value moves the mullion inside that sash.

Right-click, or moving the pointer off the drawing, cancels a pick you have not made yet.

Mullions in multi-pane sashes (web configurator)

Some sash types have several panes (leaves) — for example a multi-slide door such as an
OXXX. When you add a mullion inside one pane, the configurator asks whether to add the same
mullion to the other panes of that sash type. Answer Yes to place it in every pane at the same
position; No keeps it in the one pane only.

When you move a horizontal mullion inside a pane (Dimensioning, Level = Sash), it asks the
same question: Yes moves the matching mullion in the other panes by the same amount.

Construction lines (web configurator)

Construction lines are red dashed guide lines on the drawing, the same as in the desktop
item designer. Set them in the Dimensioning panel, under Construction lines:

• Horizontal — type a height measured from the floor, in the item’s units, and
  click Set (or press Enter). It must be at or above the height above floor; a lower
  value is refused with Construction Line Invalid – Check Position!.
• Vertical — type a distance from the left of the design and click Set. A
  value outside the design is refused with the same message.
• Delete beside a field removes the line with the value typed in it; each set line is
  also listed under its field — click one to remove just that line, or use Delete all
  construction lines.

While lines are set, adding a mullion uses them the same way the desktop designer does (the
mullion tool picks the nearest free construction line). The lines belong to the design you are editing: they are kept while you work on
it and are not saved with the item. Changing the height above floor removes them, as it does
on the desktop.