How We Confirm Hardware, Handles and Lock Specifications

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We confirm aluminum window hardware by recording every handle, lock, hinge and opening type during the on-site measurement, then putting them into a written specification and drawing. The client reviews and approves that document before anything goes into production, so the hardware delivered matches what was agreed.

Why Hardware Needs Its Own Specification

Aluminum windows look similar from across the room, but the handles, locks and hinges decide how they actually work day to day. A window that opens inward, a sliding unit that needs a key from the inside, or a balcony door with a specific lock cylinder all require different parts. Treating hardware as a separate item in the specification prevents surprises later, when a door is already installed and the wrong handle arrives.

We treat hardware as part of the window design, not an afterthought.

On-Site Measurement and Hardware Notes

Our team visits the site to measure every opening and check how the window will be used. During this visit we note the opening direction, the side the handle should be on, whether a lock is needed, and any safety requirements for children or elderly residents.

Opening type: side-hung, top-hung, sliding or fixed
Handle position and finish
Lock type and key arrangement
Surroundings such as railings or shutters that affect operation

Written Specification and Drawing

After the visit we prepare a written specification and a drawing that show each window with its hardware listed next to it. The document names the opening method, the handle model or finish, the lock type and where each part sits on the frame.

Clear labels on the drawing help the client, the architect and our production team read the same information without guessing.

Client Approval Before Production

We send the specification and drawing to the client for review. Clients often spot small details here, such as a handle placed too low for daily use or a lock that clashes with a door opening. Changes are much cheaper to make on paper than in finished aluminum.

Production begins only after the client confirms the hardware list in writing.

Production Check Against the Approved List

In the factory, the approved hardware list is attached to each job. Before assembly, the team checks that the handles, locks and hinges match the specification for that window. Any part that cannot be supplied as written is reported back before work continues, rather than substituted quietly.

Installation and Final Operation Check

On installation day we fit each window and test the hardware in use. We confirm that handles turn smoothly, locks engage properly, and the window opens and closes in the direction shown on the drawing. Any adjustment is made on the spot so the client leaves with working hardware.

Frequently asked questions

Can I change the handle or lock after approving the specification?

Yes, changes are possible before production starts. Once the job is in the factory, a change may require a new check and can affect timing, so it is best to decide early.

Do you choose the hardware for me?

We can suggest options based on the opening type and daily use, but the final choice is confirmed with you in the written specification.

Why do you need to measure on site if I already have drawings?

Drawings rarely show the exact condition of an opening. A site visit confirms dimensions, wall conditions and how the window will operate in place.

What if the hardware in the drawing is not available?

We tell you before production and offer a comparable alternative for your approval, so nothing is swapped without your agreement.

Common mistakes to avoid

Choosing the handle or lock only by appearance and skipping the opening direction is a common error. Confirm operation and position in writing before the order goes to production.

Our recommendation

Decide the opening direction and handle side first, then choose the lock type that suits how the window is used, especially near children or on balconies. Ask for the hardware list to be written on the drawing.

Summary

We confirm aluminum window hardware through a site visit, a written specification with drawing, your approval, a production check and a final test at installation.

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