Square Box industrial enclosure manufacturing

Fast Custom Electrical Enclosures: 24h Quote, 3–7 Day Prototype, Express Delivery

Engineering review workstation for fast custom enclosure quotes

Why speed matters for OEMs and panel shops

Panel shops, automation builders and equipment OEMs often need custom enclosure samples before wiring, pilot builds or customer approvals can move forward. Square Box is built around complete RFQ packages, fast engineering review, prototype fabrication after drawing approval and express delivery planning.

Speed commitments depend on complete drawings, confirmed specifications, material availability, approval timing, courier service, customs clearance and destination.

24h Quote

Complete RFQ packages are reviewed and quoted within 24 hours, or returned with engineering questions when details are missing.

3–7 Day Prototype Fabrication

Simple samples can be fabricated in as fast as 3 working days. Complex prototypes are typically completed in 7 working days after drawing approval.

Fast Door-to-Door Delivery

After dispatch, express door-to-door delivery to major North American destinations is typically 2–3 business days. Other major regions are typically 4–5 business days, depending on courier service, customs clearance and destination.

Free Remake Guarantee

If a sample does not match the approved drawing or confirmed specification due to our manufacturing issue, Square Box remakes it free.

20+ Years Export Experience

Our team brings 20+ years of sheet metal fabrication and export project experience.

U.S. Warehouse Support

U.S. warehouse support is available for approved repeat parts, sample forwarding, replacement parts and small-batch stocking.

24-Hour Quote Process

Complete RFQ packages are reviewed and quoted within 24 hours. If required details are missing, the team responds with engineering questions so the project can move forward without guessing.

  • Drawing package intake
  • Material, thickness and finish review
  • Cutout, hardware, gasket and mounting plate check
  • Quantity, packing and destination review

3–7 Day Prototype Fabrication

Simple samples can be fabricated in as fast as 3 working days. Complex prototypes are typically completed in 7 working days after drawing approval, depending on geometry, welding, coating, hardware and inspection requirements.

  • Timeline starts after drawing approval
  • Working days exclude approval delays and holidays
  • Powder coating, welding and special hardware may affect lead time

Express Door-to-Door Delivery

After dispatch, express door-to-door delivery to major North American destinations is typically 2–3 business days. Other major regions are typically 4–5 business days, depending on courier service, customs clearance and destination.

Import duties and tariff treatment depend on HTS classification, country of origin, material and product configuration. Final tariff confirmation should be reviewed by the importer’s customs broker.

Free Remake Guarantee

If a sample does not match the approved drawing or confirmed specification due to our manufacturing issue, Square Box remakes it free.

Design changes, incorrect customer drawings, new requirements after approval, customs delays and courier delays are not covered.

What we need from your RFQ

  • STEP, DXF, DWG and/or PDF drawing files
  • Quantity and prototype or production intent
  • Material, thickness and finish target
  • NEMA/IP target or environmental requirement
  • Cutouts, mounting plate, fan, louver, gasket, lock and hinge notes
  • Shipping destination and DDP delivery request if needed

What affects lead time

  • Incomplete drawings or unclear revision control
  • Complex weldments, grinding or cosmetic finish requirements
  • Special material, hardware, gasket or coating requirements
  • Customer approval timing after engineering review
  • Courier capacity, destination, customs clearance and import documentation

FAQ

Speed Advantage FAQ

What counts as a complete RFQ package?

A complete RFQ package includes usable STEP/DXF/DWG/PDF files, product photos if useful, quantity, material, thickness, finish, target NEMA/IP requirement, delivery destination and any inspection or packing requirements.

When does the 3–7 day prototype timeline start?

Prototype timing starts after drawing approval, specification confirmation and quote acceptance. Simple samples can be fabricated in as fast as 3 working days; complex prototypes are typically completed in 7 working days after approval.

Is express delivery always 2–3 days?

No. After dispatch, express door-to-door delivery to major North American destinations is typically 2–3 business days. Other major regions are typically 4–5 business days, depending on courier service, customs clearance and destination.

What does the free remake policy exclude?

Design changes, incorrect customer drawings, new requirements after approval, customs delays and courier delays are not covered. The policy applies when a sample does not match the approved drawing or confirmed specification due to our manufacturing issue.

Upload your drawing package for a 24-hour quote.

Include files, quantity, material, thickness, finish, NEMA/IP target and shipping destination for the fastest review.

Upload Drawing for 24h Quote