About 321 Plastics | In-House Acrylic Fabrication & B2B Supply

About 321 Plastics (Marketing Holders)

Since 2009, we’ve fabricated acrylic displays and plastic components for businesses that need consistent quality, fast fulfillment, and reliable support. We’re a hybrid shop: inventory-backed for stocked products and made-to-order for custom fabrication.

Quick overview:

  • In-house fabrication (not drop-ship only).
  • Nationwide shipping across the continental U.S.
  • Fast turnaround on stocked website orders (often same day / 24–48 hours).
  • Low MOQs + high-volume capability for B2B buyers.
  • Cut-to-Size sheet plastics now available.

Start here: Shop all categories • Cut-to-Size • Contact

What we make

We produce a wide range of acrylic and plastic products used in retail, medical/lab, restaurants, corporate offices, and nonprofit/event environments.

  • Acrylic sign holders, table tents, wall frames, and display solutions
  • Brochure, literature, and business card holders
  • Retail displays, organizers, risers, and merchandising components
  • Ballot/suggestion boxes, security products, hardware & fabrication components

Prefer browsing by department? Use Shop all categories.

Cut-to-Size (new service)

We’ve expanded into Cut-to-Size plastics for customers who need precise sheet goods without the back-and-forth quoting cycle.

Fabrication methods:

  • CNC routing
  • Laser cutting (material-dependent)
  • Precision saw cutting

Materials include:

  • Acrylic sheets (including mirror acrylic)
  • PETG
  • Polycarbonate
  • Plastic core and specialty sheet plastics (project-dependent)

Start an order here: Cut-to-Size Acrylic Sheets.

How we support B2B buyers
  • Low MOQs for smaller buyers and testing programs.
  • High-volume production capability for repeat purchasing and large runs.
  • Inventory-backed fulfillment on stocked items for fast turnaround.
  • Made-to-order fabrication for custom parts, sizes, and brand-specific builds.

If you’re sourcing for a business, facility, or multi-location rollout, contact us with material, dimensions, and quantities and we’ll help streamline it.

Shipping speed & expectations

Many in-stock items ship quickly (often same day or within 24–48 business hours). Custom or made-to-order projects require production time and are quoted accordingly.

For timelines and policies, see Shipping & Returns.

Our commitment
  • In-house fabrication for quality control
  • Clear communication on timelines and constraints
  • Consistent build standards for repeat orders
  • Packaging that prioritizes safe delivery

Need a recommendation?

Tell us what you’re trying to display, where it will be used, and any sizing constraints. We’ll point you to the right option or material.

Contact us