Acrylic dimension
The approximate size of the panel or the opening it fills — design-intent values are enough.
Water depth
Defines the pressure condition the acrylic will carry — an estimated depth is still worth sending.
Drawings, if available
Concept drawings, plans, sections, or sketches — formal construction drawings are not required before first contact.
These inputs start the review — they do not complete the engineering.
Why buyers often wait too long to contact an acrylic supplier
Most project teams contact a panel supplier later than they need to, and the reasons usually sound sensible: the drawings are not final yet; the structural details are still open; nobody has decided the panel thickness. Each of these feels like a prerequisite for a serious conversation. None of them is.
A viewing panel is one of the longest-lead, least-reversible items in a water feature, and the questions that shape it — scale, format, geometry, interfaces — are easiest to answer while the design can still move. When the panel review starts after those decisions are frozen, it can only react to them. When it starts early, it can inform them.
That is why the entry requirement is deliberately small. Three inputs are enough to make the first review useful, and everything else can follow inside the project.
Input one: acrylic dimension
The acrylic dimension is the approximate size of the panel or the opening it fills. Any of the usual early forms will do: a panel length and height, the dimensions of a viewing opening, a preliminary tunnel cross-section, the approximate size of a curved panel, or dimensions marked on a plan or sketch.
What this tells the review team is scale and format — whether the project is a modest window, a long transparent wall, or a walk-through geometry, and which fabrication, handling, and coordination questions arrive with that size. Two projects at the same water depth can be entirely different reviews because their dimensions put them in different categories.
Design-intent values are enough at this stage. You do not need final manufacturing dimensions, an exact radius, panel segmentation, or tolerances before making contact — those are outputs of the later engineering stages, not entry tickets to the first conversation.
Input two: water depth
Water depth is the most informative single number in an early review, because it defines the pressure condition the acrylic will carry. It also separates two fundamentally different kinds of project: a shallow visual feature and a deeper structural viewing panel are not the same engineering problem, even when the panel sizes look similar on paper.
What water depth cannot do is finish the job. There is no universal depth-to-thickness rule: the final thickness of any panel depends on its dimensions, geometry, and support and boundary conditions, and those are resolved in project-specific review — not read off a chart. A supplier who offers a final thickness from a depth figure alone is skipping the review, not accelerating it.
An estimated depth is still worth sending. "Four to five metres, not yet confirmed" sets the direction of the review even before the figure is fixed.
Input three: drawings, if available
"If available" means exactly that. Useful early-stage material includes concept drawings, architectural plans, sections, elevations, marked-up PDFs, preliminary sketches, or even a screenshot showing the relevant opening. Formal construction drawings are not required before first contact.
Two things are worth knowing about early drawings. First, a rough but honest drawing beats an invented precise one — if a detail is undecided, saying so is more useful than drawing a guess. Second, the later engineering stages will call for more detailed drawings in due course; that is a step inside the project, not a condition for starting it.
If no drawing exists yet, the review can still begin with the dimension and the depth. The drawing simply sharpens what the review can say.
What PG can review from these three inputs
With a dimension, a depth, and whatever drawing exists, an initial review can do real work:
- Confirm scope relevance — whether the request sits within cast acrylic viewing-panel scope at all, before anyone invests further time.
- Give a preliminary feasibility direction at the stated scale and depth.
- Flag the obvious geometry or interface questions that will need a consultant, structural, or interface answer as the design develops.
- Identify what information is still missing, so the next exchange is specific rather than general.
- Define the next step — further technical review, drawing clarification, a feasibility discussion, or quotation preparation, depending on where the project actually stands.
That list is deliberately modest. An initial review is a useful first assessment and a next-step definition — not an approval, and not a substitute for the engineering that follows.
What still requires project-specific review
Everything that makes a panel final is resolved later, against the actual project: geometry and segmentation, support and boundary conditions, joints, acrylic-to-structure interfaces, tolerances, and installation coordination. These are the subjects of the project-specific technical review that follows first contact — they are not additional items to prepare before writing.
The distinction runs in both directions and is worth keeping precise: three inputs are enough to start; they are not enough to finalise. Detailed technical data is shared and confirmed inside the project review itself, step by step, as the design firms up.
There is also a practical reason to respect the sequence. Most of the avoidable problems on acrylic panel projects are locked in before fabrication — at the drawing stage, where they are still cheap to fix. The early review exists to catch them there.
When the project is still early
If the project is at concept stage, send what exists now: approximate dimensions, the current concept drawing or section, and the design intent in a sentence or two. The review continues progressively — inputs can be updated as the design develops, and the early questions get answered while changes are still made on paper rather than on site.
Early contact does not commit you to anything. This gives the review a practical starting point before the full design package is available.
Acrylic panel review requirements — frequently asked questions
What information is needed to start an acrylic panel project review?
Three inputs: the acrylic dimension (the approximate panel or opening size), the water depth, and drawings if available. Approximate or design-intent values are acceptable — these inputs start a useful initial review, they do not complete the engineering. Everything else, from support conditions to joints and tolerances, is resolved in the project-specific review that follows.
Can PG Acrylic review a project without final drawings?
Yes. Drawings are helpful but optional at the initial stage — concept drawings, plans, sections, marked-up PDFs, sketches, or a screenshot of the relevant opening all work, and the review can begin with just the dimension and water depth. Formal construction drawings belong to the later engineering stages, not to first contact.
Does water depth determine acrylic panel thickness?
No. Water depth defines the pressure condition and is the most informative early number, but there is no universal depth-to-thickness rule. Final thickness depends on the panel's dimensions, geometry, and support and boundary conditions, which are resolved in project-specific technical review — not from a chart or a single figure.
Can approximate panel dimensions be used for an initial review?
Yes. A preliminary panel length and height, an opening size, a tunnel cross-section, or dimensions marked on a sketch are all useful. They tell the review team the project's scale and format. Final manufacturing dimensions, radii, segmentation, and tolerances are outputs of later engineering stages, not requirements for starting.
What can PG assess from the first three inputs?
An initial review can confirm whether the project fits cast acrylic viewing-panel scope, give a preliminary feasibility direction at the stated scale and depth, flag obvious geometry or interface questions, identify what information is still missing, and define the next step — further review, drawing clarification, a feasibility discussion, or quotation preparation.
What information may be needed after the initial review?
The project-specific stages address geometry and segmentation, support and boundary conditions, joints, acrylic-to-structure interfaces, tolerances, and installation coordination. These are resolved progressively inside the project as the design firms up — they are not additional items a buyer must prepare before making first contact.
Start the review
The working distinction is simple: enough information to start is three inputs; enough information to finalise is a project-specific review. Across projects supplied to 50+ countries since 2015, the pattern holds — the projects that go smoothly tend to be the ones where the first conversation happened early, with whatever information existed at the time.
Cast Acrylic (PMMA) Viewing Panels 20–600mm, reviewed project by project.