Dome vs Flat Foam Lid
Dome (curved) and flat foam case lids are two lid design options. Dome lids offer more headroom, used for taller items or equipment with controls. Flat lids are slimmer, stack better, used for flat items.
Detailed Comparison
| Aspect | Dome | Flat Lid |
|---|---|---|
| Internal headroom | +30-50% (taller items) | Standard |
| Stackability | Lower (dome adds height) | Higher (uniform height) |
| Weight | Slightly higher | Lower |
| Cost | +5-15% | Base |
| Best for | Cameras with hoods, instruments with knobs, drones | Laptops, flat tools, instruments |
| Common in | Camera cases, instrument cases, military | Laptop cases, trade show cases |
| Customization | More room for CNC foam | Tighter foam design |
Verdict
Choose dome lid for: equipment with controls, taller items, instrument transport. Choose flat lid for: flat items, stacking, laptop transport, cost savings. Both meet IP67 and Mil-Std-810.
Can dome lid be flatter?
Dome lids are typically 30-50% taller than flat lids. For a slimmer profile but with headroom, use a partial dome or step lid. Most case manufacturers offer this option.