A round panel gets chosen for one of two reasons. Either the service behind it is round, a duct branch, an extract termination, a pipe penetration or a light fitting, and a circle is the honest shape to cut for it. Or the ceiling is a designed surface, where a circle reads as a deliberate detail and a square hatch reads as an afterthought.
Everything else follows from those two starting points. These are openings into the void above a ceiling or behind a lining, used to reach fittings and their drivers, terminations, dampers, valves on a branch, and data or alarm cabling that has to be got at without taking a section of ceiling down.
The vocabulary shifts by trade. The same item is asked for as a circular access panel, a round access panel or a round inspection hatch, and on a drawing it may appear only as a circle with a diameter written against it. Work from that diameter and from the fire requirement, because between them they decide which of the panels on this page you can use.
This range is short and deliberately specialised. Two panels are listed and both are 1hr fire rated FlipFix access panels. There is no unrated circular panel here and no plastic one. If your round opening sits in an ordinary lining with nothing to protect, a rating is cost you do not need and a square panel from the main range will be cheaper.
The first is a metal door with a picture frame. The painted door and the surface mounted ring give a hard wearing finish that can be wiped down, and the frame is what the eye sees, a clean circle on the surface.
The second is a plasterboard door with a beaded frame, part of the beaded access panels family. The board face and the beaded perimeter are taped, skimmed and decorated along with the ceiling, which is the route to take when the circle should show only as a fine joint rather than as a fitting.
Both carry a 60 minute rating as tested. The positions a panel is accepted in come from its test evidence and not from its shape, so confirm that the line you choose is suitable where you intend to fit it, and see fire rated access panels for the rated range in full.
A circular opening is no harder to cut than a square one, but it is far less forgiving. On a square hatch a wandering line disappears behind the frame and nobody looks twice. On a circle the eye travels all the way round, and a flat spot or a ragged arc is visible from across the room. Here the cut is the job.
A dedicated hole cutter for circular access panels is listed alongside the panels. Buying it with the panel makes sense if you have more than one opening to form, and it makes sense even for a single opening in a surface anybody will look at, because it takes the geometry out of your hands.
The sequence is short. Establish the centre, confirm what is behind the board at that point, cut, then offer the panel up and fix it. Do not scale the cut off the panel by eye, and do not enlarge a hole afterwards by trimming, because the frame only has so much cover and a circle that has grown on one side cannot be pulled back.
The cutter and the panel have to agree with each other. Check the cutter’s stated capacity against the diameter of the panel you have chosen before ordering the pair. Where the diameter you need falls outside it, ask us rather than assuming another method will give you the same edge.
A hole cutter removes the whole disc in one pass, which is quick and distinctly unhelpful if a cable or a pipe is lying against the back of the board. Establish what runs above or behind the centre point and across the full diameter first, using an existing opening or a small inspection hole where one is available.
Every part of this works off the centre mark, so set that out from the room rather than from the nearest board joint, particularly where the panel will be read against a grid of light fittings or a run of services. Mark it clearly, protect it while you set up, and cut from it.
The two frames finish in different ways. A picture frame covers the cut edge on the surface, so a tidy but ordinary cut is enough. A beaded frame is plastered in with scrim tape, which asks more of both the cut and the plasterer, and repays it with a circle that sits flush in the finished ceiling.
Square panels win on choice. They come in more sizes, more frames, more door materials and more ratings, they cost less at the small end, and for a hidden service in a cupboard or a plant area there is no reason to pay for a curve nobody will ever see. Choose round when the opening will be looked at, or when the service behind it is itself round and a rectangular hatch would sit awkwardly around it.
There is one practical cost to the shape. For the same overall dimension, a circle gives you less area to reach through than a square does, which matters as soon as the work behind the panel amounts to more than a look and a turn of a valve. Size the diameter on the reach you need, not on the appearance alone.
The diameters available are shown against each product. A diameter that is not listed, or a round opening with a requirement these two lines do not cover, goes through the bespoke access panels route. For everything square, start with the full access panel range.
