What Information Should You Provide When Ordering Custom Aluminum Profiles From a Manufacturer? 

A custom aluminum profile should be designed around what the profile needs to do, not only how it should look. Before GTO Aluminum can assess a custom requirement, the useful information includes the profile’s dimensions, shape, application, installation method, quantity, finish and project drawings. The more clearly these requirements are defined, the easier it is to determine whether an existing GTO profile can solve the problem or whether a custom profile is actually justified. GTO already offers a broad range of standard Click, Universal, fencing and special profiles, so customization should fill a genuine design or installation gap rather than recreate something already available.

Start With What the Profile Needs to Do

The first question is functional: what job must the aluminum profile perform? It may need to cover a wall, finish an edge, create a particular architectural line, work around an unusual shape or become part of a custom feature. GTO’s standard range covers cladding profiles, trim profiles, curved and flat profiles, fencing components, posts and other special products. Defining the application first helps separate a genuine custom requirement from a situation where an existing product could do the job.

Give Accurate Dimensions

A manufacturer needs more than a rough description such as “make it wider” or “something similar to this.” Provide the required width, height, wall thickness, length and any other dimensions that affect the finished section. A drawing with clearly marked measurements is preferable because profile geometry can involve several dimensions that are difficult to communicate accurately in text. For example, Universal 4+4 has a 4.72-inch width and 0.70-inch height, so precise dimensions are important when defining a profile. These details are especially important when defining custom aluminum profiles, because even a small dimensional change can affect the finished assembly. 

Explain the Shape

The cross-section is often more important than the overall size. A profile may need a groove, lip, channel, mounting surface, radius, overlap or another feature to connect properly to surrounding components. Explain what each part of the shape is intended to accomplish. This is especially important when the profile needs to connect with an existing GTO system or another building component. We offer several profile geometries, including curved and flat options, so it is worth comparing the required shape with those existing designs before treating the project as completely custom.

Explain How It Will Be Installed

A profile that looks correct on a drawing can still be unsuitable if there is no practical way to install it. State whether it needs to snap onto a rail, slide into another profile, screw into a supporting structure, cover an edge or connect to another component. Click profiles use a snap-on installation, while Universal profiles use a slide-on tongue-and-groove connection. Defining the intended installation allows the profile geometry to be developed around the actual assembly instead of treating installation as an afterthought.

Provide Drawings Whenever Possible

A drawing can communicate information that a written description cannot. For a custom profile, provide the cross-sectional shape, key dimensions, connection points and any tolerances that matter. CAD information is particularly useful for architectural work because GTO provides DWG and Revit resources for many standard profiles. If the required geometry differs from an existing profile, a drawing makes the difference clear and gives the manufacturer something specific to evaluate.

Include the Project Application

Tell the manufacturer where the profile will be used. Interior decorative work, exterior cladding, fencing, a door, a pergola or another architectural application can place different demands on the profile. Our product range covers interior and exterior cladding, fencing and special applications, including curved and flat profiles. The application should therefore be part of the initial specification rather than something discussed only after the profile shape has already been designed.

Specify the Finish

A custom profile can require a standard finish, woodgrain appearance or a specific solid color. GTO offers woodgrain and solid-color finishes, including custom RAL solid colors and custom woodgrain options for qualifying larger orders. The custom process uses a base powder coating followed by a sublimation process when a transferred woodgrain or other design is required. The requested finish should therefore be identified early, particularly when color consistency is important across a large architectural project.

Custom Color Has Its Own Requirements

Custom color should be treated as part of the manufacturing plan, not simply a final design preference. For custom color orders, we currently require a minimum of half a metric ton per profile, with an approximate timeline of 60 business days. Full invoice and shipping costs must also be paid beforehand for custom orders. These conditions can affect project scheduling and procurement, so they should be confirmed before a custom finish is included in the final construction program.

Give the Expected Quantity

Quantity can influence whether customization makes practical sense. A one-off profile and a large commercial production run do not have the same manufacturing considerations. Our custom color requirements already take production quantity into account, with a minimum quantity required per profile. When discussing a custom profile, provide the expected quantity, number of profiles required and whether the same design will be used across several phases or buildings. That information helps establish the production requirement before the design is finalized.

Explain Where It Connects

A custom profile rarely exists by itself. It may need to meet a wall, window, door, corner, existing GTO profile or another material. Identify those connection points and provide the dimensions of the components it needs to meet. GTO’s range also includes angles, rails, U profiles and other supporting components, so an unusual condition may sometimes be solved by combining an existing profile with an accessory rather than manufacturing an entirely new extrusion.

Consider Whether a Standard Profile Already Works

Customization should not be the first solution simply because a project has an unusual appearance. Before developing something new, look through the Click and Universal ranges along with our fencing, flat, curved, post and special profiles. This can reveal that an existing profile already provides the required dimensions, connection or appearance. It can also simplify procurement and avoid introducing a new manufacturing requirement when the existing product range already solves the problem.

Use the Existing System When It Makes Sense

A custom profile can also be designed to work with an established GTO installation approach rather than creating a completely independent system. This is useful when the project already uses Click or Universal components and only one particular element needs to be different. We can keep the supporting assembly based on an established system where the custom element allows it, helping maintain a consistent installation approach across the project. Whether that is possible depends on the dimensions and functional requirements of the proposed profile.

Finishing Details Need to Be Defined

The edges of a profile can be just as important as its front face. Tell the manufacturer whether the profile will be visible from several directions, whether the ends will remain exposed, whether it needs to meet another profile and whether a particular corner radius is required. These details affect the finished appearance and may determine how the profile is cut, joined or installed. It is much easier to resolve those questions during design than after production has started.

Think About Tolerances

Not every dimension on a profile carries the same importance. Some measurements may need to remain tightly controlled because they determine how the profile connects to another component, while others may have more flexibility. Identify the dimensions that are critical to installation or appearance. A clear drawing can distinguish those requirements and prevent a manufacturer from having to guess which measurements are essential to the finished assembly.

Consider the Production Quantity and Schedule Together

A custom profile should be planned around the actual construction schedule. If the profile requires a special finish, the production timeline becomes particularly important. We currently give an approximate 60-business-day timeline for custom color orders, while the manufacturing schedule for a specific custom profile should be confirmed before the order is placed. Providing the required delivery date, project phase and quantity gives the manufacturer useful information for determining whether the proposed custom route fits the program.

Samples Are Useful Before a Large Order

A physical sample can reveal issues that drawings and screens do not. The profile can be checked for scale, finish, texture, connection and how it looks beside adjacent materials. Our sample boxes contain aluminum cladding profiles and finish samples, giving you a way to review the desired appearance before making a larger commitment. For a genuinely custom profile, a project-specific sample or approval process is particularly useful before committing to production quantities.

GTO’s Manufacturing Approach

We have developed our aluminum profile systems around architectural applications rather than treating them as generic aluminum sections. The company traces its manufacturing history to Galilee Profiles, established in Israel in 1993, and says its profiles have been developed with industrial and architectural engineering expertise. Today, GTO combines standard products, installation systems, custom finishes and custom profile capabilities, allowing us to start with an existing profile where possible and move toward a customized solution when the project genuinely requires one.

What a Useful Custom Profile Brief Looks Like

A manufacturer should ideally receive a short project brief containing the application, cross-section drawing, dimensions, critical tolerances, installation method, connection details, material requirements, finish, color, quantity and required delivery date. Include photographs or sketches where the profile needs to match an existing architectural feature. The goal is to remove guesswork before production begins. With those details in hand, GTO can first determine whether a Click, Universal, fencing or special profile already meets the requirement before moving into custom development. These details give us the information needed to evaluate custom aluminum profiles against the project’s actual requirements. 

FAQs

Does every unusual aluminum detail require a custom profile?

No. GTO has standard Click and Universal profiles, fencing products, flat and curved profiles, trims and other special products. An unusual requirement should first be compared with the existing range. A custom profile becomes more relevant when the available products cannot provide the required geometry, connection or application.

Can GTO create a custom color for a custom profile?

Yes. We offer custom RAL solid colors and custom woodgrain finishes for qualifying larger orders. Custom orders currently require a minimum of half a metric ton per profile and have an approximate 60-business-day timeline. Those requirements should be confirmed for the specific project before ordering.

What should I send GTO when requesting a custom profile?

Start with a dimensioned cross-section drawing and explain the profile’s purpose, installation method, connection points, required finish, quantity and schedule. Photographs, CAD drawings and details of adjacent components can also help. The clearer the intended assembly is, the easier it is for us to determine whether a standard GTO profile or a custom solution is the better fit.