Seven clear acrylic discs standing in a row, from 1 mm to 12 mm thick, beside a steel rule

Clear acrylic sheet

4.5 mm (3/16″) clear cast acrylic

Clear cast acrylic, laser cut to your size up to 48 × 48 inches, with protective paper on both sides.

Noticeably stiffer than 3 mm for larger panels, and lighter and less costly than 6 mm.

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Price your sheet

Set to 4.5 mm. Enter your delivery postal code or ZIP and the size; the delivered price updates as you type and goes straight to the cart. Need another thickness? Pick it below.

Size
Your price is for delivery to this postal code only. The shipping address at checkout must match it; orders going to a different address are held and re-priced before they ship.
Pieces of this size, cut and shipped together, up to 25 per line.
Enter at least 1.

Need holes, rounded corners, engraving, or a shape that isn't here? Request a quote instead and add it in the notes. We'll price it for you.

Why cast acrylic

  • Cast, not extruded

    Cast sheet cuts, drills, routes and engraves cleanly without melting, and polishes to a high lustre.

  • Tougher than glass

    Shatter resistant at about half the weight of glass. Safer around kids, pets and public spaces.

  • Made for outdoors

    Stands up to intense sun, extreme cold, sudden temperature swings and salt spray. UV resistant, so it won't yellow.

  • Protected until you need it

    Paper masking on both sides keeps the surface scratch-free in transit and while you work. Peel it off at the end.

A free-standing clear acrylic divider on a desk, with a potted plant behind it

Where 4.5 mm is used

Stiffer panels without the weight

Desk dividers and counter shields. Cabinet doors and display cases. Window inserts and glazing. Larger sign panels and wall displays.

For free-standing pieces over larger areas, 6 mm stays flatter.

Request a quote

Thicknesses

Cut in 1/8-inch steps up to 48 × 48 inches. A full 48 × 48 piece of 4.5 mm weighs about 18 lb. Larger pieces are quoted individually.

Thickness Also calledWeight per sq ft
1 mm 3/64″0.24 lb
2 mm 5/64″0.49 lb
3 mm 1/8″0.74 lb
4.5 mm 3/16″1.11 lb
6 mm 1/4″1.48 lb
9 mm 3/8″2.2 lb
12 mm 1/2″2.94 lb

Weights are approximate and are what we use to estimate shipping.

See the thicknesses side by side

Questions, answered

Is 4.5 mm the same as 3/16 inch?

Close enough for most jobs: 3/16 inch is 4.76 mm, and we sell 4.5 mm as 3/16″. It fits our living hinges for 3–4.5 mm sheet.

4.5 mm or 6 mm?

4.5 mm suits panels held along their edges, like cabinet doors and framed windows. 6 mm stays flatter over larger free-standing pieces like dividers and table protectors.

Is this cast or extruded acrylic?

Cast. It cuts and engraves cleanly without melting, polishes to a high lustre, and is the grade professionals and hobbyists both prefer.

Will it yellow or cloud outdoors?

No. Cast acrylic is UV resistant and won't yellow under normal sun exposure. It handles intense sunlight, extreme cold, sudden temperature changes and salt spray.

Can I cut or drill it myself?

Yes. It can be cut with a table, band or jig saw, drilled, routed or thermoformed. Leave the protective paper on while you work.

What's the largest piece you can cut?

48 × 48 inches through the calculator. Larger pieces are possible; use the quote form and we'll price it.

Will I be charged customs or duties?

No. For orders shipping to the United States, the price you see is the delivered price: shipping, duties and import fees are included, and your parcel arrives with nothing to pay.

Can I order holes, rounded corners or engraving?

Yes. Request a quote and describe what you need in the notes. We'll confirm the price and send a link to pay.

Other acrylic finishes