Square Box industrial enclosure manufacturing

How to Prepare CAD Files for a Custom Enclosure Quote

Engineering workstation with CAD enclosure model drawings and measuring tools

A complete CAD package helps engineering review bends, cutouts, hardware fit, mounting plate layout, gasket paths and assembly scope before quote release.

Engineering procurement notes

For drawing-based enclosure projects, quote accuracy depends on more than a 3D model. A strong CAD package should include 3D geometry, flat cut files, marked PDF dimensions, material and finish notes, and any BOM or terminal schedule required for assembly.

Who this is for

Engineers preparing enclosure drawings
Purchasing teams collecting files from design departments
Panel shops quoting repeat control box and back panel work

Typical use cases

Sheet metal flat patterns for laser cutting
3D enclosure bodies and cabinet assemblies
Marked PDF drawings with critical dimensions
Terminal schedules for pre-wired assemblies

Files needed for RFQ

STEP / STP
DXF / DWG
PDF drawing
quantity
material
thickness
finish
NEMA/IP target
shipping ZIP
BOM / terminal schedule if required

What Square Box can fabricate / assemble

Drawing-based laser cutting and bending
Door, cover, gland plate and mounting plate fabrication
Hardware, gasket and grounding provisions
Customer-approved BOM assembly support

Inspection points

cutouts
mounting plate
gasket path
grounding studs
terminal layout
surface finish
packaging photos

Compliance note

Built for NEMA-style and IP-rated applications. Final rating depends on design, materials and testing requirements.

Square Box provides custom enclosure fabrication, component mounting and customer-BOM assembly support. Final electrical listing, field acceptance and project compliance depend on the complete design, selected components, testing and certification requirements.

File package

Which file does what in an enclosure RFQ

Different file types answer different engineering questions. A stronger package reduces assumptions around geometry, flat patterns, hardware and assembly scope.

File type	Best use	Notes
STEP/STP	3D enclosure geometry	Include doors, plates, brackets
DXF/DWG	Laser cutting and hole patterns	Separate flat parts if possible
PDF	Critical dimensions and notes	Mark threaded holes, PEM, studs
BOM	Component layout	Needed for DIN rail / terminal work
Terminal schedule	Pre-wired assemblies	Needed for labels and grouping

Internal procurement paths

Prepare a stronger RFQ package

RFQ checklist

Inspection photos

Request a Quote

FAQ

How to Prepare CAD Files for a Custom Enclosure Quote FAQ

Do you need both 3D and 2D files?

For most projects, a 3D file helps review geometry while a 2D PDF defines critical dimensions, tolerances, finish, hardware and notes. DXF or DWG flat files help laser cutting and punching review.

Can a marked PDF be used?

A marked PDF can start the review, but quote accuracy improves when it is paired with STEP/STP and DXF/DWG files.

When is a terminal schedule needed?

A terminal schedule is needed when the enclosure includes terminal blocks, wire markers, low-voltage pre-wiring or customer-approved component layout work.

Upload drawings, BOM or a terminal schedule for review.

Send STEP/STP, DXF/DWG, PDF, quantity, material, thickness, finish, NEMA/IP target, shipping ZIP and any BOM or terminal schedule required for assembly.

Upload Drawing for 24h Quote