Specify the complete enclosure
A useful NEMA 3R specification includes dimensions, material, doors, hardware, drainage, cable entry, mounting, heat, finish, labels, and evidence—not only the designation. Each item can affect outdoor performance and maintenance.
Specification checklist
| Item | Planning question |
|---|---|
| Size and layout | What equipment, clearances, and spare space are required? |
| Material and finish | How will corrosion, UV, and mechanical exposure be handled? |
| Doors and hardware | What access, locking, seals, and service space are needed? |
| Cable entry and drainage | How are penetrations, drip paths, and condensate managed? |
| Heat and mounting | What cooling, supports, lifting, and foundation interfaces apply? |
| Documentation | Which drawings, tests, and configuration evidence are required? |
Scope boundary
This checklist does not assign a rating or approve a product without configuration-specific evidence.






















