What should be approved on an aluminium window sample before bulk production?
The sample should represent the intended order closely enough to approve the visible and functional direction. Record the frame series, profile dimensions, finish and colour reference, corner quality, glass build-up, spacer, gaskets, drainage, hardware, handle finish, lock operation, screens, accessories, labels and packing method. Operate the sash several times and note any differences that will occur at full project size, especially reinforcement, glass thickness or hardware for larger panels. Photograph the approved details and issue a short approval record linked to the quotation and drawing revision. Any later change should update the drawings, scope and price before bulk production begins.
Buyer decision boundary
A sample is a controlled reference, not proof of full-size behaviour or all final requirements; record changes before bulk release.
Evidence to request or retain
- Sample ID and revision.
- Dated approval photos.
- Deviation log.
- Scope update.
- Release record.
Example input: Sample register
- ID
- Revision
- Feature
- Photo
- Difference
- Change
- Approver
- Release
What this guide does not confirm
Not a type-test, final report, consistency guarantee or automatic change approval.
Sample approval record
| Area | Check | Approval evidence |
|---|---|---|
| Frame and finish | Series, dimensions, colour and corners | Photos plus colour reference |
| Operation | Hardware, locks, drainage and screens | Operating notes or short video |
| Order control | Glass, labels, packing and revisions | Signed or confirmed approval list |
How closely should the sample match the planned order?
A sample is useful only if it represents the planned order. Before requesting one, confirm the frame system, color, glass direction, hardware finish, screen requirement and packing expectation. Otherwise the sample may look good but fail to answer the project question.
For builders and showrooms, the sample should help the buyer approve the look, touch, operation and quote scope before bulk production begins.
The sample review should record profile series, finish, corner construction, seals and visible workmanship.
Which profile, finish and corner details should be approved?
Look at profile depth, visible frame width, corner connection, powder coating, anodized surface, gasket fit and drainage openings. The finish should match the approved color sample, not only a screen photo.
Ask the factory which visible details may change in the final project size. A small sample can show material logic, but large windows may require reinforcement, different glass or stronger hardware.
How should hardware and sash operation be tested?
Open, close and operate the lock several times. Check handle feel, lock point compression, roller movement, hinge support, screen movement and any rubbing sound. A sample should be checked from operation, sealing and hardware details, not just the front view.
If the final order includes large panels, ask how the sample hardware scales to heavier glass. The answer should connect hardware choice to sash size and glass weight.
Operate the sample and check hinges, stays, locks, handles, drainage and gasket compression before approval.
Which glass, drainage and packing notes need a record?
Glass build-up, spacer color, gasket position and drainage path are easy to overlook in a sample. Ask the factory to explain which parts match the final order and which parts are shown only because of sample size.
For exposed openings, drainage and sealing details should be reviewed before production. It is better to ask these questions at sample stage than after a full container is packed.
How should approval changes be controlled before production?
After the sample is checked, record approved color, profile, glass, hardware, screen, accessory and packing notes. Photos with short comments are enough. The goal is to make sure the final order follows the same approved direction.
If anything changes after sample approval, update the quote and drawings before production. Clear approval notes protect both buyer and factory from avoidable confusion.
Sample approval should also confirm labels, accessories, surface protection and the packing standard for bulk production.
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.