Core Terms: 13.7 inch deep rack, mid depth rack case, medium depth flight case, 13″ rack enclosure.

Use-Case & Equipment Specific: guitar effects rack case, Fractal Axe Fx rack case, Line 6 Helix rack case, modeling amp rack, network switch mobile rack, portable audio processor case.

Descriptive & Form Factor: mid size road case, extended shallow rack, 13.7 inch amp rack, 4U 13.7 inch deep case.

Search Intent Phrasings: “rack case for guitar processors”, “best rack depth for effects units”, “13.7 inch deep network rack”.