A full cross-section breakdown of the shelter design, access points, and engineering specifications. Real numbers, real materials, real protection.
Interactive diagram — hover or tap the highlighted points to explore each component.
A concealed hatch beneath the kitchen island. One pull drops a ladder into the shelter. Interior access in under 10 seconds, no exterior exposure required.
Exterior access point at the rear of the home with a separate locked hatch. Provides a second entry route if the interior hatch is blocked — or for entry from outside when the tornado has passed.
Reinforced steel shelter sized for tiny home footprints (fits 2–4 occupants). Built to FEMA P-361 storm shelter standards. Ventilation, seating bench, and emergency supplies storage included.
Steel anchor rods extend from the shelter's top plate to bolt directly into the trailer frame. The shelter's mass and earth contact provide the resistance — your home is literally bolted to bedrock.
Design targets for the current prototype. Final specifications subject to testing and certification.
| Shelter interior | 8 ft × 5 ft × 7 ft |
| Floor footprint | 42 sq ft |
| Depth below grade | 6.5 ft |
| Hatch opening | 30 × 30 in |
| Ladder length | 6.5 ft |
| Occupancy | 2–4 persons |
| Shelter walls | 3/16 in A36 steel |
| Roof plate | 1/4 in steel plate |
| Anchor rods | 1 in Grade 8 steel |
| Hatch door | 12-gauge steel |
| Exterior coating | Epoxy primer + polyurethane |
| Drainage | Sump pump + gravel bed |
| Design target | EF5 |
| Wind speed target | 200+ mph |
| Standard reference | FEMA P-361 |
| Debris impact target | 15-lb 2×4 @ 100 mph |
| Anchor load capacity | 50,000 lb uplift |
| Status | Prototype testing |
| Anchor type | Direct bolt-through |
| Anchor points | 6 total |
| Frame attachment | Trailer steel cross-members |
| Ground depth | 4 ft into undisturbed earth |
| Compatible frames | 24 ft+, standard THOWs |
| Install method | Crane-set + bolt |
| Primary access | Kitchen island hatch |
| Secondary access | Back door exterior |
| Hatch mechanism | Lift-and-drop, gas assist |
| Interior lock | Manual dead bolt |
| Ventilation | Passive + powered fan |
| Emergency kit space | Integrated shelf |
| Estimated MSRP | $6,500–$8,500 |
| vs. alternatives | Saves $3,000–$5,000 |
| Install crew | 2 persons + crane |
| Install time | 1 day |
| Site requirement | Permanent or semi-perm |
| Availability | Pre-order 2026 |
The primary access point is designed for middle-of-the-night response. You don't leave the house. You pull a handle under the kitchen island and descend. The hatch is sized for adults with limited mobility and uses a gas-assist mechanism for one-handed operation.
The secondary access point is at the rear of the home, exterior. It provides a separate route if the kitchen hatch is blocked by debris, fire, or a fallen person. It also serves as the primary egress after a storm — you can exit the shelter without re-entering a potentially unstable structure.
We're taking pre-orders and talking with builders. Whether you own a tiny home, build them professionally, or want to know when this is available — reach out.
We'll be in touch within 48 hours. You're on the early list.