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Precast strongroom kit

FMV-1608-H08-S-CL

16 ft long · 8 ft wide · 8 ft clear height · stairs · concrete lid

A 16 × 8 ft room under the lawn with a walk-down stair and a locking steel security door — for firearms, documents and valuables, out of sight under the lawn.

$40,633

Kit price*

The Freestone No Bull Warranty: 10 years on every panel
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Tell us about your project — another size, a question, or a site to check.

12'-0"3'-0"STAIR · 13 TREADS @ 11" RUN / 6¾" RISE16'-0"8'-0"PLAN · 16 × 8 FT · 128 SQ FT8'-0" CLEAR · PRECAST FLOOR SECTIONS4 PANELS PER SIDE · 2 PER END
Plan · FMV-1608-H08-S-CL

Built for

  • Firearms and ammunition
  • Documents, heirlooms and valuables
  • Storage that stays out of sight
Outside size
16 × 8 ft
Clear height
8 ft
Wall section
9 in reinforced
Design
PE stamped design · sheets published

Every part in the kit

Every line comes off the Freestone price list, with the quantities Freestone has set for this kit.

StrongroomFMV-1608-H08-S-CL
  • Wall panel, 4 × 8 ft8 × $1,298
    $10,384
  • Precast lid, 4 × 8 ft4 × $1,380
    $5,520
  • Floor section, 43½" × 78" × 3"4 × $786
    $3,144
  • Stair landing, 3 × 3 ft1 × $296
    $296
  • Wall cap, 48" × 9" × 5"5 × $191
    $955
  • Corner panel, 4 × 8 ft8 × $1,352
    $10,816
  • Precast stair kit1 × $2,696
    $2,696
  • Door lintel1 × $166
    $166
  • Stair handrail1 × $4,680
    $4,680
  • Steel security door1 × $1,560
    $1,560
  • Airflow pipework1 × $416
    $416
Kit price$40,633
  • * Transportation to your site is an additional cost, quoted separately.
  • * Kits are supplied for assembly on your prepared site. We can install if needed — ask us for a quote.

Options

  • Exposed aggregate finishFinish for above-ground utility buildings.On request
  • InstallationKits are supplied for assembly on your prepared site. We can install if needed — ask us for a quote.On request
  • Waterproofing, per panelApplied per panel to the buried envelope. Not used on root cellars, which need high humidity.$52 / panel

How it goes in

  • No poured footer below grade

    A buried vault sits on a bed of crushed, compacted stone — no footing to form, pour or wait on. A building set above ground requires a poured footing, so frost can't shift it.

  • Sealed and watertight

    Every panel seam is sealed with polyurethane and through-bolted. The structure is watertight once the last seam closes.

  • Grouted, then backfilled

    On a buried kit, the precast floor sections sit inside the walls with a small gap all round. The gaps are grouted solid before any backfill goes in.

If your building department needs stamped plans, our engineer seals your layout once you have signed off on the drawing, with the structural calculations attached. His stamp covers the states he is licensed in — tell us where you are building, and we will say what your soil, frost depth or seismic category adds.

Questions about this kit

Is it rated?

No. It is a PE stamped, reinforced concrete structure with a steel door, but Freestone claims no blast, ballistic, fire or tornado rating.

Can it be waterproofed?

Yes, per panel. It is not a cellar, so it does not need to hold humidity.

How is it different from the root cellar?

Same structure and stair. It takes a locking steel security door instead of the insulated one, and a precast lid under the lawn instead of a building over the entry.

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