Building large flight cases and transport boxes is easy and much cheaper than buying them. Hinges, locks, fittings and aluminum rails is readily available at
Transport Cases & Trunks Ultrasonics Flight Cases
Road Case Design & Manufacturing – Armor Road Cases
How To Build Flight Case and Transport Box
Amptown Cases GmbH - Flightcases from professionals - transport boxes, packaging and transport cases
Can you check a box as luggage: A guide to all you need to know
How To Build Flight Case and Transport Box
ITHWIU 14 Inch Hard Shell Carrying Case Ideal for Wireless Mic System Storage & Camera Gear Transportation, Aluminum Alloy Sturdy Build, Customizable Pre-Diced Foam, Black : Musical Instruments
For Yamaha DM7-EX Flip-Ready Hydraulic Console Easy Retracting Lifting 1U Rack Space Flight Case with wheels by ZCASE
Flight and Transit Cases — Trojan Crates Ltd
How To Build Flight Case and Transport Box
UNIVERSAL Transport Kiste 80 x 60 x 43cm Truhen Lager Transport Camping Case Box