One-piece die-formed prime grade material as specified see ordering information. Corners continuously seam welded and smooth with no post grinding (TIG). Clamshell housing resistant to penetration and contraband concealment. TGIC polyester powder coat 5-stage pre-treatment. Salt spray test: 1,000 hours; Reflectance: 92{04aef197e2a33ee94af7b49af44700ef917df47392523dfa0075c5fa9ebd8a96}