How to Measure a Hard Case for Replacement Foam
Replacement foam only protects gear if it fills the case without gaps. The case's outside size tells you nothing useful – you need the interior footprint. Here is how to measure it in a few minutes.
1. Empty the case and measure the base
Take out the old foam. Measure the interior length and width across the bottom of the base, wall to wall. Hard case walls usually taper, so the bottom is the narrowest point – that is the number foam has to fit.
2. Measure the depth of the base and the lid
Measure from the floor of the base to its rim, then the lid the same way. Add them for the total interior depth. RAGAR inserts are 2" thick per layer, so the base depth tells you how many layers fit.
3. Round down, not up
Write each measurement down to the nearest 1/8". If you are between sizes, go with the smaller one – a snug insert slides in, an oversized one bows and will not sit flat.
4. Match the footprint
RAGAR inserts are sold by footprint, so any case with a matching interior takes the same insert:
| Insert footprint | Typical use | Shop |
|---|---|---|
| 17.75" x 12.5" | handguns, optics, meters, compact electronics | 17.75" x 12.5" insert |
| 19.75" x 11.75" | larger pistol layouts, drones, field kits | 19.75" x 11.75" insert |
| 21.75" x 17" | cameras, drones, equipment | 21.75" x 17" insert |
| 35.75" x 13.5" | carbines and shorter rifles | 35.75" x 13.5" insert |
| 41.75" x 13.5" | rifles and shotguns | 41.75" x 13.5" insert |
| 46" x 13.5" | long rifles | 46" x 13.5" insert |
| 50.5" x 13.5" | scoped long guns, extended layouts | 50.5" x 13.5" insert |
Browse all replacement foam or the full range of RAGAR reconfigurable foam inserts.