Width and length ordered
The catalogue or quotation dimension before project-specific cutting and fabrication.
Dimensions, thickness and planning
ACP Sheet Sizes: A Comprehensive Aludecor Guide
ACP sheet sizes usually describe the width and length of an aluminium composite panel, while ACP sheet thickness is specified separately. Our commonly published standard formats are 2440 x 1220 mm, 3050 x 1220 mm and 3660 x 1220 mm, with verified product options in 3 mm, 4 mm and 6 mm overall thicknesses.
Two ACP sheets with the same width and length can still differ in aluminium skin, alloy, core, coating, finish, grade and intended application. At Aludecor, we recommend selecting dimensions only after the panel module, fabrication returns, finish direction, transport, site handling and installation method have been reviewed.
Larger sheets do not automatically reduce project cost. They may reduce joints in one layout and increase offcuts or logistics complexity in another. We therefore distinguish nominal sheet area from usable fabricated area and advise project teams to coordinate the final size with approved drawings and the fabricator's cutting plan.
1220 mmCommon standard panel width
3 / 4 / 6 mmVerified overall thickness families
Layout firstSize follows module and fabrication
Quick answer
What should you know before selecting ACP sheet sizes?
We advise buyers to compare dimensions and the complete panel specification together.
- ACP sheet size normally means width x length.
- Overall panel thickness is stated separately.
- Aluminium skin and core thickness are separate values.
- Standard sizes simplify availability but may not optimise every layout.
- Custom dimensions require technical and commercial confirmation.
- Gross sheet area is not the same as usable fabricated coverage.
- Directional finishes can change cutting yield.
- Quantity should be validated through drawings and a nesting plan.
- Longer sheets may reduce joints but complicate logistics.
- Price comparisons must use the same dimensions and specification.
Terminology
What do ACP sheet sizes mean?
In normal commercial use, ACP sheet sizes refer mainly to width and length. A complete specification may be written as width x length x overall thickness, usually in millimetres.
Area available for nesting
The dimension remaining after any required trimming, damaged edges, finish direction and cutting clearances.
Visible or installed module
The approved panel after grooves, folds, returns, joints, cassettes and edge treatments are incorporated.
Our recommendation: Never use “sheet size”, “fabrication size”, “finished panel size” and “installed module” as interchangeable terms. Each belongs to a different stage of the project.
Standard dimensions
Standard Aludecor ACP sheet sizes
Our published catalogue and product filters identify three common 1220 mm-wide formats. Actual availability varies by grade, shade, finish, thickness, core and quantity, so we confirm the selected combination in the current quotation.
| Commercial format | Width | Length | Gross area | Verified thickness families | Availability note |
|---|---|---|---|---|---|
| 8 x 4 ft | 1220 mm | 2440 mm | 2.9768 m2 / about 32.04 sq ft | 3 mm, 4 mm and 6 mm, subject to grade | Common catalogue format; verify selected product and shade. |
| 10 x 4 ft | 1220 mm | 3050 mm | 3.7210 m2 / about 40.05 sq ft | 3 mm, 4 mm and 6 mm, subject to grade | Longer standard format; confirm stock and finish direction. |
| 12 x 4 ft | 1220 mm | 3660 mm | 4.4652 m2 / about 48.06 sq ft | 3 mm, 4 mm and 6 mm, subject to grade | Long sheet; confirm handling, transport and fabrication. |
Gross area is mathematical sheet area. It is not a promise of finished cladding coverage. Special-width and large-format requirements must be confirmed for the exact product specification.
Grade relationship
How our product grades relate to ACP sheet sizes
A grade is a complete construction specification, not only a size. We read width, thickness, aluminium skins, alloy, core, coating and intended application together.
| Grade | Width options in technical schedule | Length | Overall thickness | Aluminium skin / alloy | Core | Coating | Application / availability note |
|---|---|---|---|---|---|---|---|
| AL312 | 1220 mm | 2440 / 3050 / 3660 mm subject to current product availability | 3 mm | 0.12 mm / AA1100 | LDPE | Polyester | Interior product; confirm shade and length. |
| AL32 | 1220 mm | Standard catalogue lengths subject to product availability | 3 mm | 0.20 mm / AA1100 | LDPE or FR B1 | Polyester | Interior product; confirm core and finish. |
| AL3C | 1220 mm | Standard catalogue lengths subject to product availability | 3 mm | 0.20 mm / AA1100 | LDPE or FRB1 | SDP | Interior / selected exterior use; project review required. |
| AL33 | 1220 mm | Standard catalogue lengths subject to product availability | 3 mm | 0.25 mm / AA1100 | LDPE or FRB1 | SDP | Interior / selected exterior use; confirm current grade schedule. |
| AL33D | 750, 1000, 1220 and 1550 mm listed | Verify current technical data sheet | 3 mm | 0.30 mm / AA3105 | LDPE, FR B1 or FR B | PVDF | Special-width technical entry; availability and length require confirmation. |
| AL43 | 1220 mm | Standard catalogue lengths subject to product availability | 4 mm | 0.25 mm / AA1100 | LDPE or FRB1 | SDP | Interior / selected exterior use; confirm project requirement. |
| AL43D | 750, 1000, 1220 and 1550 mm listed | Verify current technical data sheet | 4 mm | 0.30 mm / AA3105 | LDPE, FRB1 or FRB | PVDF | Special-width technical entry; verify exact combination before ordering. |
| AL445 | 1220 mm | Verify current technical data sheet | 4 mm | 0.45 mm / AA3105 | LDPE, FRB1 or FRB | SDP or PVDF | Exterior grade; confirm coating and core. |
| AL4E | 1220 or 1550 mm | Verify current technical data sheet | 4 mm | 0.50 mm / AA3105 | LDPE, FRB1 or FRB | SDP | Exterior grade; special width requires confirmation. |
| AL45 | 1220 or 1550 mm | Verify current technical data sheet | 4 mm | 0.50 mm / AA3105 | LDPE, FRB1, FRB or FRA2 | PVDF | Exterior grade; size, fire core and finish must be confirmed together. |
| AL45D | 1220 or 1550 mm | Verify current technical data sheet | 4 mm | 0.50 mm / AA5005 | LDPE, FRB1, FRB or FRA2 | PVDF | Exterior grade; project-specific availability. |
| AL4C | 1220 mm | Verify current technical data sheet | 4 mm | 0.20 mm / AA1100 | LDPE or FRB1 | SDP | Confirm intended use and current product data. |
| AL63 | 1220 mm | Standard catalogue lengths subject to product availability | 6 mm | 0.25 mm / AA1100 | LDPE or FRB1 | SDP | Thicker panel family; application and support system require review. |
| AL65 | 1220 mm | Verify current technical data sheet | 6 mm | 0.50 mm / AA3105 | LDPE, FRB1 or FRB | PVDF | Exterior grade; confirm current availability and project engineering. |
Selected 5 ft commercial variants are also identified in current pricing material at 1500 mm width. The technical schedule separately lists 1550 mm for some grades; these dimensions must not be treated as interchangeable without written confirmation.
Separate specifications
ACP sheet size vs ACP sheet thickness
ACP sheet sizes and ACP sheet thickness describe different parts of the specification. Equal width and length do not make two panels equivalent.
| Particular | What it describes | Why it matters | What to verify |
|---|---|---|---|
| Width | Shorter plan dimension of the sheet | Nesting, panel module, joint frequency and machine capacity | Standard or special width, finish direction and tolerance |
| Length | Longer plan dimension of the sheet | Long panel runs, joints, transport and lifting | Stock length, custom feasibility and packaging |
| Overall thickness | Total aluminium-core-aluminium build-up | Rigidity, fabrication, weight and grade selection | 3 mm, 4 mm, 6 mm or verified project option |
| Aluminium skin | Thickness of each aluminium face | Strength, formability, wind response and durability | Both face skins, alloy and temper |
| Core thickness | Central core dimension | Completes panel build-up and influences weight and behaviour | Core type and verified thickness |
| Coating | Surface paint system | Appearance, weathering and application suitability | Polyester, SDP, PVDF or other verified finish |
| Grade | Complete product specification | Connects skins, alloy, core, coating, thickness and use | Exact grade code on quotation and invoice |
Common thicknesses
How 3 mm, 4 mm and 6 mm options relate to dimensions
We do not recommend selecting overall thickness independently of aluminium skin, core, coating, panel module and support system.
Lightweight panel family
Verified grades include AL312, AL32, AL3C, AL33 and AL33D. Applications range from interiors to selected exterior and signage uses depending on the complete grade.
Broad exterior-grade range
Verified grades include AL43, AL43D, AL445, AL4E, AL45, AL45D and AL4C. The same 4 mm thickness can contain very different skins, alloys, cores and coatings.
Higher overall build-up
Verified grades include AL63 and AL65. Panel module, wind design, support spacing and handling still require project-specific review.
For a deeper comparison, review our ACP sheet thickness guide.
Standard or custom
When should a custom ACP sheet size be considered?
Standard formats generally make procurement, cutting and replacement planning simpler. A custom ACP sheet size may be worth studying when a repeated panel module produces avoidable joints or offcuts, but it must remain technically and commercially feasible.
We confirm custom dimensions only after reviewing: product range, width, length, thickness, skins, core, coating, colour, quantity, coil width, production scheduling, packaging, freight, site access and project timeline.
Custom does not automatically mean lower wastage
- The panel layout must repeatedly use the proposed dimension.
- Directional finishes may restrict rotation and nesting.
- Special widths or lengths may require minimum quantities.
- Long sheets can increase lifting and transport requirements.
- Replacement stock may be harder to source later.
- Current technical data and quotation must confirm availability.
Application guidance
How ACP sheet sizes change by application
The correct panel format depends on what will be fabricated and installed, not only on the gross surface area.
We coordinate elevation modules with wind design, support spacing, cassette depth, returns, joints, finish direction, lifting and replacement access.
- Do not assume one universal facade size.
- Check corner zones and building height.
- Confirm transport before selecting long sheets.
Wall height, doors, openings, impact areas, pattern continuity and access determine the most efficient layout.
- Align joints with architectural lines.
- Optimise repeated wall modules.
- Protect directional finishes.
Sign dimensions, folded returns, routing, printing or vinyl, support framing, wind exposure and transport influence the sheet format.
- Account for face and return depth.
- Confirm machine-bed capacity.
- Plan offcut reuse for letters and panels.
Module size must coordinate with the suspension system, services, access panels, support, handling and replacement strategy.
- Do not ignore access openings.
- Review sagging and support.
- Coordinate service cut-outs.
Column circumference, vertical joints, curved or faceted fabrication, grain direction and cut optimisation drive the sheet layout.
- Check bending or faceting method.
- Maintain finish direction.
- Allow for closure and vertical joints.
Long visible lines can make joint placement important, but runoff, edge returns, support and access remain critical.
- Coordinate water paths.
- Check edge and corner fabrication.
- Balance joint reduction with logistics.
Price implications
How ACP sheet sizes influence ACP sheet price
ACP sheet price may change with width, length, total area, thickness, aluminium skin, core, coating, finish, grade, custom production, quantity, packaging, freight, fabrication and wastage. A higher per-sheet price does not automatically mean a higher per-square-metre or installed cost.
We advise buyers to normalise the price to the same gross area and complete specification. Per-sheet and per-square-foot quotes cannot be compared until the sheet dimensions are known.
Price comparison inputs
- Width, length and gross area
- Overall thickness and both skins
- Alloy, core, coating and finish
- Standard or custom production
- MOQ, shade and batch requirements
- Packaging, freight and unloading
- Fabrication, installation and accessories
- Cutting yield and replacement stock
Quotation comparison
How we help buyers compare different ACP sheet sizes
The lowest per-sheet quotation may not be the lowest per-area or total project cost.
| Particular | Quotation A | Quotation B | Why it matters |
|---|---|---|---|
| Width x length | Record exact dimensions | Record exact dimensions | Determines gross area and cutting options. |
| Gross area | Calculate m2 per sheet | Calculate m2 per sheet | Normalises per-sheet rates. |
| Panel specification | Thickness, skins, alloy, core | Thickness, skins, alloy, core | Prevents unlike products being compared. |
| Surface system | Coating, finish, shade | Coating, finish, shade | Affects application, appearance and cost. |
| Commercial scope | MOQ, taxes, freight, delivery | MOQ, taxes, freight, delivery | Shows landed material cost. |
| Project scope | Fabrication, installation, accessories | Fabrication, installation, accessories | Shows total system cost. |
| Yield | Cutting plan and wastage | Cutting plan and wastage | Shows usable project output. |
Common misunderstandings
ACP sheet sizes buyers often misunderstand
Standard is not always optimal
A standard format can be available and still produce unnecessary joints or offcuts in a particular module.
Gross is not usable
Grooves, returns, cuts and finish direction reduce the portion that becomes installed panels.
Thickness is separate
Width and length do not reveal overall panel thickness, skin thickness, core or grade.
Longer is not always cheaper
Long sheets can reduce joints but add transport, lifting, workshop and replacement challenges.
Need help confirming the right ACP sheet dimensions?
Share your drawings, panel module, required width and length, thickness, skin, core, finish, grade, quantity, fabrication scope and delivery location. Our technical team can help you with the details.
Frequently asked questions
Questions about ACP sheet sizes
These answers provide planning guidance. Final dimensions, grade, cutting schedule and installation approval remain project-specific.