Are side wall corrugated insert depths identical on standard and high cube shipping containers?

Side wall corrugated insert depths are identical between standard and high cube shipping containers because both ISO container profiles share the same standard 1.5-inch corrugation depth, differing only by twelve inches of vertical height.

Builders converting Corten steel shipping containers across North America face severe thermal bridging and condensation risks along conductive steel ribs. Because high cube containers measure 9 feet 6 inches tall compared to standard 8-foot-6-inch containers, specifiers frequently question whether corrugation depth profiles vary before ordering pre-cut continuous insulation inserts.

If you only do one thing: Order side wall inserts based on standard ISO 1.5-inch corrugation profiles, but calculate total insert piece counts to cover the extra 12 inches of vertical wall height on high cube units.

• ISO standardization: International Organization for Standardization rules mandate matching 1.5-inch (38 mm) side corrugation depths across standard 20-foot and 40-foot containers, regardless of height classification.
• Vertical height delta: Standard units measure 8 feet 6 inches (102 inches) tall externally, while high cube units measure 9 feet 6 inches (114 inches), requiring the same insert cross-section extended over an additional vertical foot of wall.
• Air gap elimination: Expanded polystyrene (EPS) inserts press flush into side wall corrugation valleys, halting convective air movement and condensation behind continuous insulation panels.
• Continuous planar mounting: Infilling identical side corrugation depths turns wavy steel walls into a flush surface, allowing full adhesive contact when adhering panels with built-in framing studs.
• End wall profile variation: Side wall depths remain uniform across standard and high cube models, but end wall and cargo door corrugations feature different dimensional profiles that require dedicated end wall insert shapes.

• Watch out for: Non-ISO domestic containers or modified intermodal boxes that depart from standard 1.5-inch corrugation profiles, which cause fitment gaps behind pre-formed EPS inserts.
• Watch out for: Ordering standard 8.5-foot container insulation bundles for a 9.5-foot high cube build, which leaves the top 12 inches of corrugations exposed without infill pieces.
• Watch out for: Interchanging side wall inserts with end wall inserts during staging, as end wall ribs have narrower profiles that will not seat properly in side wall valleys.

Measure your container’s side rib depth to confirm standard 1.5-inch ISO geometry, then tally your insert counts using your exact 8.5-foot or 9.5-foot wall height.