An acrylic box is a fabricated enclosure made from polymethyl methacrylate (PMMA) sheet, usually called acrylic, plexiglass, or Perspex. The useful way to classify these boxes is by the job they do: collect, display, store, or protect. Color and shape are options on top of that job, not separate product types.
Conclusion: For collection use, choose the box by slot size, lock, and whether the contents must stay visible. For display or storage, choose it by lid type and how often the box is opened. Sheet thickness in the 3 mm to 8 mm range covers most countertop boxes; floor-standing and lock-heavy designs usually need the upper end of that range or internal reinforcement. Those figures are common fabrication practice, not a tested strength rating.
What counts as an acrylic box
PMMA is a transparent thermoplastic. Cast and extruded sheet are both used for boxes. Cast sheet is the usual choice when edges will be polished and panels solvent-bonded, because it machines and cements more predictably than many extruded grades. Optical clarity, surface hardness, and chemical resistance still depend on the sheet grade and any coating, so a catalog photo is not a performance specification.
A finished box is panels cut to size, edges finished, then joined with solvent cement, fasteners, or both. A lid, slot, hinge, lock, pocket, or sign holder is added only if the use needs it. Acrylic is rigid and can crack at an unsupported corner or around a poorly placed lock hole. It is also scratchable. Those two limits matter more in purchasing than generic claims that acrylic is “strong” or “unbreakable.”
Types by job, not by material name
Ballot and voting boxes
A ballot box is a collection box with a narrow drop slot and, in most public uses, a lock. The slot should accept a folded ballot or card and reject a hand. Clear or lightly tinted walls let observers see that the box is empty at the start and that papers are accumulating. Opaque or dark-tinted walls are reasonable when the ballot itself should not be readable through the wall. A side pocket or brochure holder is optional; it holds blank forms, not cast ballots.
Donation, tip, and money boxes
These use a coin slot, bill slot, or both. A coin slot is usually a short slit; a bill slot needs more length and a shallow throat so notes do not spring back out. Visibility helps a charity show that money is being collected. A lock matters wherever the box is left unattended. A small countertop tip box and a large fundraising box are the same type with different volume and hardware, not different materials.
Suggestion and feedback boxes
The opening is sized for a card or folded form, not for coins. Many include a pen tray, a form pocket, or a sign holder so the question being asked is visible next to the slot. A lock is useful in offices and retail; a simple lift-off lid can be enough in a supervised classroom. Wall-mounted versions need a defined fixing method and enough rear panel thickness for screws.
Display and museum-style cases
The priority is an unobstructed view and a lid or door that opens for curators, not for the public. Hinged lids, lift-off lids, and locking doors are all common. UV-filtering sheet or an external film is a separate specification if the object inside is light-sensitive. Standard clear PMMA does not automatically provide meaningful UV protection.
Storage and organizer boxes
These are opened often, so the lid mechanism matters more than a slot. Hinged, sliding, and slip-over lids each trade access against dust sealing. Sliding lids need clearance and can jam if the box is overfilled. These boxes are a poor substitute for a ballot box: a removable lid is easy for someone else to open.
Floor-standing collection boxes
A tall box or a box on a plinth is still a ballot, donation, or suggestion box. The extra design points are base stability, a handle or wheels if it moves between events, and a lock placed where staff can reach it without tipping the unit. Wall thickness alone does not make a tall box stable.
Side-by-side comparison
| Type | Typical opening | Lock | Best when | Weak fit |
|---|---|---|---|---|
| Ballot box | Narrow card or paper slot | Usually yes | Votes, raffle entries, confidential cards | Coins or frequent staff access |
| Donation or tip box | Coin slot, bill slot, or both | Yes if unattended | Counters, events, charity tables | Large paper ballots |
| Suggestion box | Card slot; often a form pocket | Optional | Offices, shops, schools | High-value cash left overnight |
| Display case | Hinged, lift-off, or door | Optional | Objects that must be seen | Anonymous drop-in collection |
| Storage box | Full lid | Rare | Parts, samples, desk organization | Any unattended collection |
That split is the practical one. A clear locked box with a card slot can serve as a ballot box or a suggestion box. Calling it a different product because the acrylic is pink or orange does not change the specification that matters: slot, lock, volume, and thickness.
Thickness, edges, and hardware
Shops commonly build small countertop collection boxes from 3 mm to 5 mm sheet, and larger or lock-bearing boxes from 5 mm to 8 mm. Floors stands and wide spans often use 8 mm or add internal ribs. These are fabrication ranges, not impact ratings. A thicker wall resists flex and gives a lock more material to bite into. It does not turn the box into a safe.
Edges should be polished if they are touched or visible. Flame polishing is fast and can leave a slight ripple; diamond polishing is slower and usually flatter. Solvent joints need clean, square cuts. A lock should sit on a reinforced area, with the key removable only in the locked position if the box will be left in public. Slot width should be tested with the actual card, coin, or bill, not assumed from a drawing.
Color is either tinted sheet or a printed panel. Translucent tints hide the text on a ballot better than fully clear sheet and still show fill level. Printing sits on the surface and can scratch in high-touch retail unless the artwork is placed on a protected face or covered.
Which type fits which setting
Staffed election or AGM table. A clear or translucent ballot box with a lock and a slot matched to the ballot. Empty it only with two people present if your rules require that. A brochure pocket is useful; it is not a substitute for a separate stack of ballots.
Unattended charity counter. A donation box with a bill slot, a lock, and enough weight or a fixed base that it is not easy to carry off. Clear walls help donors see activity. Do not use a lift-off storage lid.
Retail feedback. A suggestion box with a form pocket and a short sign holder. A lock is worth having if comments are collected overnight. Countertop height matters more than a floor stand unless the store has no staffed counter.
School or office survey. A simple locked card box is enough. Floor-standing units are justified only when the box must be seen across a lobby.
Object on show. A display case with a hinged or locking lid, not a collection box with a slot cut into it.
A short selection sequence
Decide the contents first, then the opening, then the lock, then the size. Measure the largest item that must pass the slot and the volume that must fit before emptying. Specify sheet thickness, color, pocket or sign holder, and logo method in the same brief. Ask for a sample when the slot, print, or lock position is new, because those details are hard to judge from a rendering.
Acrylic is a reasonable default when the box should be light, clear, and made in a custom size. It is a weak default when the box must resist determined forced entry, outdoor impact, or long sun exposure without a stated UV-stabilized grade. In those cases, ask what sheet grade and hardware are actually being quoted.
Who publishes this guide
This page is published by SKBallotBox.com, a site operated by Sunday Knight Co., Ltd., an acrylic fabricator in Dongguan, China, established in 2012. The factory builds custom collection boxes for business buyers, including ballot, donation, and suggestion boxes, and states a typical minimum of about 100 pieces per design. That commercial focus is separate from the comparisons above. Category examples are listed under ballot boxes, donation boxes, and suggestion boxes. Company background is on the about page.
FAQ
Is acrylic the same as plexiglass?
In purchasing, yes. Plexiglass, Perspex, and acrylic sheet all refer to PMMA products. Brand names do not guarantee a cast grade, a thickness, or a UV package. Those have to be specified.
Does a clear box make an election invalid?
No. Visibility shows that the box starts empty and is not swapped. It can also make marks on a thin ballot readable, so folded ballots or a tinted wall are the usual fix. Follow the rule set for that vote; the material does not decide compliance.
What thickness should a countertop ballot box use?
3 mm can work for a small, lightly used box. 5 mm is the more common quote for a locked countertop box. Treat those as starting points and confirm them against box size and lock cutouts.
Can one box collect both cash and comment cards?
Only with two openings sized for each item, or with a compromise slot that will be awkward for one of them. Separate boxes are simpler when both streams are regular.
Are acrylic boxes waterproof?
Bonded acrylic is water-resistant, not a sealed outdoor enclosure. Slots, locks, and lids are leak paths. Outdoor use needs a stated sheet grade and a plan for rain entering the slot.
Sources
- IUPAC. Recommended abbreviations for polymer names, including PMMA. iupac.org
- ASTM D4802. Standard specification for poly(methyl methacrylate) acrylic plastic sheet. astm.org
- Encyclopaedia Britannica. Polymethyl methacrylate. britannica.com
Sheet thickness ranges in this article are fabrication practice used for collection boxes, not values taken from those standards. ASTM D4802 covers sheet classification, not box design.
