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Survive-A-Storm

Survive-A-Storm Extreme Above Ground Tornado Shelter

SKU EX0404
$5,300.00
$5,300.00

Estimated shipping time

You can typically expect your items to arrive within 4–7 business days, depending on your location and product availability.

What is your Return Policy?

At Northgrid Supply, we want every customer to shop with confidence. If something doesn’t go as planned, we’ve made returns and refunds simple and fair. Here’s how it works:

1. Return Window

You can request a return within 30 days of receiving your order. Unfortunately, we’re unable to accept returns after that time frame.

2. Who Pays for Return Shipping?

  • If your item arrives damaged, defective, or incorrect, we’ll cover the return shipping cost.
  • If you’re returning an item because you changed your mind, you’ll be responsible for return shipping fees.

3. Damaged or Defective Items

Received something broken or not working properly? Contact us within 30 days. We’ll provide a prepaid return label and once the item is returned and inspected, we’ll issue either a full refund or a replacement—including any original shipping costs.

4. Changed Your Mind?

If you no longer want the item, you can return it within 30 days—as long as it's unused, in its original packaging, and in resellable condition. You’ll need to handle the return shipping, and once we receive and inspect it, we’ll refund the product cost (excluding shipping).

5. Refund Processing

Once we receive and approve your return, we’ll send a confirmation email and issue a refund to your original payment method within 7 business days. Please allow additional time for banks or credit card companies to process and reflect the refund.

If it’s been over 10 business days since your refund was approved and you still don’t see it, contact us at support@northgridsupply.com and we’ll look into it immediately.

6. Restocking Fees

In some cases, a restocking fee may apply depending on the item and return reason. If applicable, we’ll clearly communicate this during your return request process.

 The Extreme is an above-ground storm shelter constructed from 1/4-inch steel with heavy 5.4-pound channel reinforcements. Designed for installation on a suitable concrete pad, it can be placed in a yard, under a carport, in a garage, or another appropriate location.

Available in multiple sizes, the shelter provides different occupancy capacities while maintaining core features such as internal locking mechanisms, a removable escape hatch, conduit connections, locking bench storage, and a triple-locking single-lever door latch. The 4×4 configuration uses an out-swing door, while the 6×4, 6×6, and 6×8 configurations use an in-swing door.

Professional installation by an NSSA-accredited installer is recommended and is required to certify the shelter with an NSSA Type 4 Seal.

Key Features

  • Heavy-Duty Steel Construction: Constructed from 1/4-inch steel with heavy 5.4-pound channel reinforcements.
  • Internal Locking: Two additional internal locking mechanisms allow the shelter to double as a safe room.
  • Escape Hatch: Features a quick, tool-less removable escape hatch for an additional exit option.
  • Locking Bench Storage: Built-in locking bench provides storage space for valuables and emergency supplies.
  • Conduit Connection: Provides conduit connections for electrical, coax, and Cat-5.
  • Triple-Locking Door Latch: Commercial-grade single-lever handle includes padlock protection.
  • Multiple Installation Locations: Designed for installation on a suitable concrete pad in locations such as a yard, carport, or garage.

Extreme shelter internal locking mechanism

Internal Locking

Two additional internal locking mechanisms to double as a safe room.

Conduit Connection

For electrical, coax, cat-5.

(Not included on 3'x5')

Extreme shelter removable escape hatch

Escape Hatch

Quick, tool-less removal for additional escape options.

(Not included on 3'x5')

Bench Storage

Store valuables, a first aid kit, water and non-perishable food supplies in the locking bench.

Interior triple-locking door mechanism

Triple-Locking Single-Lever Door Latch

Commercial-grade handle with padlock protection.

Exterior triple-locking single-lever door latch

Specifications

Extreme 4×4

  • Size: 4 ft. × 4 ft.
  • Dimensions: 48 in. W × 48 in. L × 78 in. H
  • Weight: 2,000 (unit not specified)
  • Occupancy: 5 people
  • Steel Thickness: 1/4 in.
  • Channel Reinforcements: 5.4 lb
  • Door: Out-swing
  • Anchor Quantity: 16
  • Escape Hatch: Included
  • Conduit Connection: Electrical, coax, Cat-5

Extreme 6×4

  • Size: 6 ft. × 4 ft.
  • Dimensions: 72 in. W × 48 in. L × 78 in. H
  • Weight: 2,300 (unit not specified)
  • Occupancy: 8 people
  • Steel Thickness: 1/4 in.
  • Channel Reinforcements: 5.4 lb
  • Door: In-swing
  • Anchor Quantity: 20
  • Escape Hatch: Included
  • Conduit Connection: Electrical, coax, Cat-5

Extreme 6×6

  • Size: 6 ft. × 6 ft.
  • Dimensions: 72 in. W × 72 in. L × 78 in. H
  • Weight: 2,600 (unit not specified)
  • Occupancy: 12 people
  • Steel Thickness: 1/4 in.
  • Channel Reinforcements: 5.4 lb
  • Door: In-swing
  • Anchor Quantity: 24
  • Escape Hatch: Included
  • Conduit Connection: Electrical, coax, Cat-5

Extreme 6×8

  • Size: 6 ft. × 8 ft.
  • Dimensions: 72 in. W × 96 in. L × 78 in. H
  • Weight: 2,900 (unit not specified)
  • Occupancy: 16 people
  • Steel Thickness: 1/4 in.
  • Channel Reinforcements: 5.4 lb
  • Door: In-swing
  • Anchor Quantity: 28
  • Escape Hatch: Included
  • Conduit Connection: Electrical, coax, Cat-5

Included

  • Locking bench seat
  • Removable escape hatch
  • Installation anchors
  • Installation washers
  • Installation nuts
  • Roof replacement bolt and washer

Product Support

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    Total price$29,485.00