A practical guide for builders and buyers reading a window schedule before sending it to an aluminium window factory: marks, sizes, quantities, opening types, glass notes and missing details. The goal is to help buyers prepare a clearer project brief before asking for a factory quotation.
1. Start with the mark, not the photo
A window schedule usually gives each opening a mark such as W01, W02 or D03. That mark matters because it connects the drawing, elevation, room, quote line, packing label and installation location.
When sending a schedule to a factory, keep the mark column visible. If you also send reference photos, name them by the same mark. This is much more useful than sending ten images with no connection to the drawing.
2. Check width, height, quantity and floor level
The factory needs to know whether a size appears once or repeats many times. Repeated sizes can be quoted and packed more efficiently, while special sizes need closer review. Floor level also matters for handling, safety glass discussion and opening direction.
If the schedule is incomplete, mark which dimensions are rough openings and which are finished sizes. A short note can prevent the supplier from assuming the wrong measurement basis.
3. Read the opening type before choosing the system
A schedule may say fixed, awning, casement, sliding, lift-slide, folding or louver. If the opening type is missing, the factory may quote the wrong system. Large fixed glass, narrow ventilation windows and wide patio doors have different frame, hardware and packing needs.
If the architect uses local abbreviations, add a quick explanation. For example, note whether an awning window opens outward, whether a sliding door needs screen track, and whether a casement window needs restrictors.
4. Separate glass notes from frame notes
Glass notes can include double glazing, Low-E, laminated glass, acoustic glass, safety glass or privacy glass. Frame notes can include thermal break, color, threshold, screen, hardware finish and drainage. Mixing everything into one vague note makes the quote harder to compare.
A cleaner brief separates glass target, frame system, opening direction and accessory requirement. That lets the supplier show where the price changes come from.
5. Flag missing decisions instead of hiding them
A schedule does not need to be perfect before a first quote, but missing decisions should be visible. Common missing items include glass target, color, screen, handle finish, threshold detail, packing method and delivery term.
Mark uncertain items as "to review" and send the file anyway. A good factory can then ask focused questions instead of guessing. That is usually faster than waiting until every project note is finalized.
6. Add one cover note before sending the schedule
Before sending the file, add a short cover note with project country, city, buyer role, building type, expected delivery term and the main decision still open. For example: "Builder package, Sydney renovation, 18 windows, 3 sliding doors, double glazing target, black frame, CIF discussion."
That note helps the factory read the schedule with the right assumptions. It also makes the first reply more useful because the supplier can ask about missing glass, hardware, packing or large-opening details immediately.
Let YULUX review your drawings before pricing.
Send us your window schedule, floor plans or photos. We review opening sizes, system direction, glass, hardware, finish and packing scope before quoting.