How to Submit Window Specifications for a Formal Proposal

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To submit window specifications for a formal proposal, send the opening dimensions, quantities, profile and glazing requirements, and site photos to the factory. The factory then measures on site, prepares a drawing and written specification, and issues a proposal for your approval before production begins.

What to Include in Your Submission

A complete submission saves time in every later stage. For aluminum windows, prepare the following for each opening: width and height in millimeters, the number of units, the opening type (sliding, casement, fixed or tilt), and the floor plan location of each window.

Photos of each opening, taken straight on and at an angle
Drawings or markups from the architect, if available
Required glazing type and any safety glass requirements
Color or finish preference and any reference sample

Clear, complete information lets the factory respond with a precise proposal rather than a rough estimate.

On-Site Measurement

Dimensions taken from drawings alone are often not enough, because openings can differ from the plan after construction. A technician visits the site and measures each opening at several points for width, height and depth. Measurements are recorded per opening and checked for squareness.

Note any obstacles such as tiles, plaster lines, or installed frames that affect the final size. Where the wall is not yet finished, agree with the contractor on the reference line used for measuring.

Drawing and Written Specification

After measurement, the factory prepares a drawing showing each window, its dimensions, opening direction and the position of hardware. A written specification accompanies the drawing and lists profiles, glazing, hardware, finish and installation details.

Review both documents carefully. Confirm the opening directions, the glazing thickness and the finish against your project requirements before you approve them.

Client Approval

Approval is the point where the proposal becomes binding for production. The approved drawing and specification should be signed or confirmed in writing by the responsible party, such as the architect or the building committee.

Any change requested after approval may affect the schedule and the final result, so resolve questions about sizes, colors and openings before this step.

Production in the Factory

Once approved, the windows are cut, assembled and glazed in the workshop according to the specification. Aluminum profiles are prepared with precise cuts and corner joints, and each unit is checked against its drawing before it leaves the production line.

Finishing, such as powder coating, is applied as agreed. Keeping the approved reference sample in mind helps ensure the color matches what was selected.

Installation and Final Check

Installation is coordinated with the site schedule so that openings are ready and protected. The installer fixes the frames plumb and level, seals the perimeter and tests the opening, sliding or tilt action.

Walk through the finished windows with the site representative and note any open points. A short final check at handover helps confirm that the work matches the approved specification.

Frequently asked questions

What measurements do I need to submit window specifications?

Provide the width and height of each opening in millimeters, the number of units, and the opening type. Site measurement is still needed to confirm the final sizes.

Do I need drawings to submit specifications?

Drawings are helpful but not mandatory. Clear photos and a floor plan indicating each window's location are often enough to start the process.

Who approves the window specification?

Approval is usually given by the architect, interior designer or building committee, depending on who manages the project. Confirm the responsible person before submitting.

Can the specification be changed after approval?

Changes are possible but may affect the schedule and the final result. It is best to finalize sizes, colors and openings before production begins.

Common mistakes to avoid

Submitting only rough estimates of sizes or skipping the on-site measurement can lead to windows that do not fit. Approving the drawing without reviewing opening directions and glazing details is another common error.

Our recommendation

Prepare a single document per project listing every opening with its dimensions, quantity, type and location, and attach site photos. Ask for the approved drawing and specification to be confirmed in writing before production starts.

Summary

A well-prepared submission with accurate measurements, a clear drawing and a written specification leads to a reliable proposal and fewer surprises at installation.

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