Part one · the case
Apache (Harbor Freight) and Pelican Vault, plus the Protector, Nanuk and Seahorse models builders actually use. Interior length and width set your baffle. Interior depth minus electronics sets your driver clearance.
Prices are a snapshot, not a quote. Depth is listed as base / lid, because the lid is shallow and usually holds the amp, not the air spring.
| Case | Exterior (in) | Interior (in) | Base / lid depth | Gross volume | Price | Links |
|---|---|---|---|---|---|---|
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0 cases in the library. Blank cells mean the manufacturer does not publish that figure.
Sizing math
Counts assume circular flanges packed on the usable rectangle of the large face, bolted directly to the shell: 0.75″ clear border, 0.25″ between flanges. This is a ceiling, not a recommendation — the last column is that count doubled for front and back.
| Case | 3″ | 4″ | 5.25″ | 6.5″ | 8″ | 10″ | 6.5″ front + back | Gross volume |
|---|---|---|---|---|---|---|---|---|
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Flange diameters used: 3″=3.9, 4″=4.8, 5.25″=5.9, 6.5″=7.1, 8″=8.7, 10″=10.7 in. Typical steel and cast frames vary by ±0.3″, so confirm against the driver you buy. Printed face plates recover about 0.45″ per side; see the math.
Cheapest way into a usable shell, and the plastic cuts cleanly with a hole saw if you keep the speed down. Latches and hinges are the weak points at high SPL, not the walls. The 4800 is the sweet spot for a 2.1 build; the 9800 is a two-person box.
Thicker walls, better latches, wider model range, and published interior dimensions that hold up to a tape measure. You pay for it. The V600 and V730 are the common 2.1 sizes; the V800 is for a 10″ sub plus satellites.