Submitting Window Specifications for a Production Quote

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A window quote specification is a complete set of measurements, opening types, profile choices, glazing details and site conditions sent to the manufacturer before production starts. Clear, verified dimensions with photos and a written spec let the factory issue an accurate quotation and avoid costly changes later.

What a Complete Window Specification Includes

A complete specification gives the factory everything needed to draw and produce the units without guessing. For each opening, list the location in the project, the rough or finished opening width and height, the number of leaves and the opening direction.

Room or floor reference and an opening number
Width and height at three points, with the smallest value noted
Opening type: fixed, casement, tilt or sliding
Glazing type and any special glass requirements
Installation side and wall thickness

Attach photos of each opening taken straight on, plus any architectural drawings that show the wall build-up.

Taking Accurate Measurements on Site

Measurements should be taken after the masonry is finished and plumb, because the factory builds to the actual opening. Measure from the finished face to the finished face and check diagonals to confirm the opening is square.

Record any out-of-level sills, protruding tiles or uneven plaster. Mark each measurement on the sketch so the drawing matches the wall exactly. When in doubt, the factory can arrange an on-site measurement visit before drawing starts.

Choosing Profiles, Finish and Hardware

Belgian steel-look profile windows and doors come in several profile depths and sightlines. Confirm the profile system, the color or steel-look finish and the handle and hinge style in writing so there is no confusion during quotation.

Points to Confirm

Profile system and frame depth
Finish code and whether both sides match
Handle position and lock type
Security or safety glass requirements

Any change to these items after approval may affect the quotation.

From Inquiry to Quotation Approval

Send the specification package with photos, measurements and drawings in one submission. The factory reviews the data, may ask follow-up questions, and then prepares a drawing and a written specification for your approval.

Read the drawing carefully. Check every opening number, dimension, opening direction and finish. Approving the drawing confirms that the factory will produce exactly what is shown, so mistakes caught at this stage are the cheapest to fix.

Production, Finishing and Delivery Planning

Once the drawing is approved, the units move into production in the factory. Steel components are cut, welded and assembled to the approved drawing, then finished to the agreed specification.

Plan your site schedule around the production stage and ask the factory to confirm the expected sequence. Keep the openings clean, dry and ready for installation so the units can be fitted without delay when they arrive.

Installation Coordination on Site

Installation works best when the site is ready before the units arrive. Confirm that openings are clear, the wall is finished to the agreed level, and there is safe access for lifting and fitting.

Check each unit against its opening number on arrival
Protect frames from plaster, paint and tile dust
Agree on sealing, fixing and final adjustment steps

Ask the installer to inspect operation of each leaf before the site is handed over.

Frequently asked questions

What measurements do I need for a window quote?

Provide width and height at three points for each opening, measured from finished face to finished face, plus the diagonals. Include a sketch and photos so the factory can confirm the shape.

Should I measure before or after plastering?

Measure after the masonry and plaster are finished, since the factory builds to the actual opening. Measuring too early can lead to a unit that does not fit.

Can I send photos instead of a site visit?

Photos help, but for accurate production an on-site measurement is recommended, especially for irregular or older openings. The factory can advise when a visit is needed.

Do I need to approve the drawing before production?

Yes. Approving the drawing and written specification confirms the final dimensions, profiles and finishes, and production begins only after that approval.

Common mistakes to avoid

Sending rough measurements taken before the walls are finished, or failing to note out-of-square openings, causes units that do not fit. Approving a drawing without checking every opening number and dimension is the most common cause of costly rework.

Our recommendation

Measure every opening yourself at three points and check the diagonals, then send photos with the sketch in one package. Read the drawing line by line before approval, because it is the final reference for production.

Summary

A clear, verified window specification with accurate site measurements, confirmed profiles and an approved drawing leads to a precise quotation and smooth production and installation.

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