DynaLoc™ Type 4 Explosive Magazine for Low Explosives
U.S. Chemical Storage engineers durable Type 4 magazine storage for your low explosives.
Type 4 explosive storage magazines offer fire-resistant, weather-resistant, and theft-resistant protection of low explosives, ensuring compliance with ATF 27 CFR, Part 555.208 and other safety regulations.
There are various types of Type 4 indoor/outdoor magazines available, tailored to specific storage needs. Flexibility in our design process allows for custom sizes and configurations to accommodate a range of explosive storage needs, including shelves or cubbies, internal A/C units, lighting, attached cap boxes, and more.
Features & Benefits
- Theft-Resistant Design - with dual anti-theft lock hoods
- Bullet-Resistant Durability - protects against catastrophic events (not bullet PROOF)
- Robust Design Details - like door overhangs, vent hoods, hand-finished woodworking & welds
- Widest Size Offering Available - with 25 pre-engineered models
- Protection From the Elements - with a 2-part polyurethane coating , a static grounding system, and vents to manage humidity
- Secure Top Lifting Lugs or D-rings (depending on mag size)
- Strong, Hand-Welded 12-Gauge U.S. Steel Exterior
- Crafted 1/2" Wood Interior - minimizes risk of ignition
Common Applications
- Law Enforcement - black powder, ammunition, and contraband
- Hospitality / Entertainment / Cruise Ships - fireworks, flares, and pyrotechnics
- Mining - ANFO or fuses
- Military - ships globally
Downloadable Information & Fact Sheets
Compliance & Approvals
U.S. Chemical Storage builds and delivers customized, high-quality, and fully compliant solutions for explosive storage that prioritize safety and operational efficiency.
Contact us today to design a custom solution for your specific needs.
All DynaLoc® Type 4 magazines meet or exceed the following regulations:
- ATF 27 CFR, Part 555.208
27 CFR, Part 555 Subpart K
29 CFR, Part 1910 Subpart H
49 CFR, Subtitle B, Chapter 1 18 USC, Part 842
- NFPA 70
- DoD regulation compliant (when specified to order)
Frequently Asked Questions
Yes. High and low explosives that are placed in outdoor magazines should have a grounding system according to the NFPA 70 standard. Grounding protects your magazine and its contents against lightning strike, and it will need to be properly grounded by a licensed electrician. For more information, please refer to NFPA .
Yes. Like all our safe storage buildings, U.S. Chemical Storage can provide custom explosive storage magazines to fit your needs. For assistance creating a custom solution for your storage needs, contact one of our experts.
For storage purposes, federal requirements classify explosive materials according to their velocity. There are three classes of explosive materials, per ATF 27 CFR 555.202:
- High Explosives – explosives which detonate by means of a blasting cap (dynamite, emulsions, flash powders, etc.)
- Low explosives – explosives which deflagrate when confined (black powder, safety fuses, ignitor cords, “display fireworks,” etc.)
- Blasting agents – explosives consisting of fuel and oxidizer, intended for blasting and unable to detonated by a No. 8 test blasting cap when unconfined (ammonium nitrate-fuel oil and certain water-gels)
For more information, visit https://www.atf.gov/explosives/explosive-storage-requirements.
No. A common misconception is explosive storage magazines will contain a blast inside the unit—this is not the case. Explosive storage magazines work as a safeguard against theft and accidental detonation by improper storage and the environment.
Each class requires a unique storage solution to ensure optimal safety and management. Type 2 is for storage of high explosives, Type 4 is for storage of low explosives, and Type 3 are day boxes that are used to transport both high and low explosives.
Our Type 2 and Type 4 explosive storage magazines are available in both indoor and outdoor styles, and every storage type we offer features theft-resistant, weather-resistant, and fire-resistant construction.
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How To Measure and Order Your Magazine
- Interior dimensions below are given as LxWxH.
- Measurements are from wall to wall, and may not account for 1/4 round in corners, or bracing pieces in larger pieces. Make sure your explosive material has plenty of room.
- If you require interior shelving or ATF approved padlocks, please state so at time of order.
- Cap boxes can be engineered and welded to the side of any model as a custom order.
- Measurements below are +/- 1in unless otherwise noted.
Click ‘Request Quote’ on any product below to speak with our expert sales team. Please provide your shipping zip code for an accurate freight calculation.
DynaLoc® Type 4 Explosive Magazines
Steel Type 4 explosive magazines are for indoor or outdoor use in the storage of low explosives. They are constructed from 12-gauge steel and lined with ½-inch plywood to create a non-sparking interior that minimizes the risk of accidental ignition.
Type 4 Magazine | EL 301
Dimensions (Exterior): 36 x 36 x 36 in
Dimensions (Interior): 34.8 x 34.8 x 34.8 in
Approximate Weight: 477 lbs.
Type 4 Magazine | EL 305
Dimensions (Exterior): 42 x 42 x 36in
Dimensions (Interior): 40.8 x 40.8 x 34.8 in
Approximate Weight: 556 lbs.
Type 4 Magazine | EL 309
Dimensions (Exterior): 42 x 42 x 42 in
Dimensions (Interior): 40.8 x 40.8 x 40.8 in
Approximate Weight: 605 lbs.
Type 4 Magazine | EL 313
Dimensions (Exterior): 48 x 48 x 48 in
Dimensions (Interior): 46.8 x 46.8 x 46.8 in
Approximate Weight: 789 lbs.
Type 4 Magazine | EL 317
Dimensions (Exterior): 60 x 48 x 48 in
Dimensions (Interior): 55.8 x 46.8 x 46.8 in
Approximate Weight: 911 lbs.
Type 4 Magazine | EL 321
Dimensions (Exterior): 72 x 48 x 48 in
Dimensions (Interior): 63 x 39 x 43.8 in
Approximate Weight: 1034 lbs.
Type 4 Magazine | EL 325
Dimensions (Exterior): 66 x 60 x 60 in
Dimensions (Interior): 57 x 51 x 55.8 in
Approximate Weight: 1596 lbs.
Type 4 Magazine | EL 329
Dimensions (Exterior): 60 x 48 x 48 in
Dimensions (Interior): 51 x 39 x 79.8 in
Approximate Weight: 1693 lbs.
Type 4 Magazine | EL 333
Dimensions (Exterior): 60 x 60 x 84 in
Dimensions (Interior): 51 x 51 x 79.8 in
Approximate Weight: 1881 lbs.
Type 4 Magazine | EL 337
Dimensions (Exterior): 72 x 72 x 72 in
Dimensions (Interior): 63 x 63 x 67.8 in
Approximate Weight: 2109 lbs.
Type 4 Magazine | EL 341
Dimensions (Exterior): 84 x 66 x 84 in
Dimensions (Interior): 75 x 57 x 79.8 in
Approximate Weight: 2433 lbs.
Type 4 Magazine | EL 345
Dimensions (Exterior): 84 x 84 x 84 in
Dimensions (Interior): 75 x 75 x 79.8 in
Approximate Weight: 2786 lbs.
Type 4 Magazine | EL 349
Dimensions (Exterior): 96 x 84 x 48 in
Dimensions (Interior): 87 x 75 x 79.8 in
Approximate Weight: 3080 lbs.
Type 4 Magazine | EL 353
Dimensions (Exterior): 132 x 84 x 84 in
Dimensions (Interior): 123 x 75 x 79.8 in
Approximate Weight: 3820 lbs.
Type 4 Magazine | EL 357
Dimensions (Exterior): 144 x 84 x 84 in
Dimensions (Interior): 135 x 75 x 79.8 in
Approximate Weight: 4114 lbs.
Type 4 Magazine | EL 361
Dimensions (Exterior): 144 x 96 x 90 in
Dimensions (Interior): 135 x 87 x 85.8 in
Approximate Weight: 4170 lbs.
Type 4 Magazine | EL 365
Dimensions (Exterior): 240 x 84 x 84 in
Dimensions (Interior): 231 x 75 x 79.8 in
Approximate Weight: 6183 lbs.
Type 4 Magazine | EL 369
Dimensions (Exterior): 264 x 84 x 84 in
Dimensions (Interior): 255 x 75 x 79.8 in
Approximate Weight: 6683 lbs.
Type 4 Magazine | EL 373
Dimensions (Exterior): 240 x 96 x 90 in
Dimensions (Interior): 231 x 87 x 85.8 in
Approximate Weight: 6878 lbs.
Type 4 Magazine | EL 377
Dimensions (Exterior): 240 x 96 x 96 in
Dimensions (Interior): 231 x 87 x 91.8 in
Approximate Weight: 7122 lbs.
Type 4 Magazine | EL 381
Dimensions (Exterior): 288 x 96 x 96 in
Dimensions (Interior): 279 x 87 x 91.8 in
Approximate Weight: 8290 lbs.
Type 4 Magazine | EL 385
Dimensions (Exterior): 336 x 96 x 96 in
Dimensions (Interior): 327 x 87 x 91.8 in
Approximate Weight: 9457 lbs.
Type 4 Magazine | EL 389
Dimensions (Exterior): 384 x 96 x 96 in
Dimensions (Interior): 975 x 87 x 91.8 in
Approximate Weight: 10625 lbs.
Type 4 Magazine | EL 393
Dimensions (Exterior): 432 x 96 x 96 in
Dimensions (Interior): 423 x 87 x 91.8 in
Approximate Weight: 11793 lbs.
Type 4 Magazine | EL 397
Dimensions (Exterior): 480 x 96 x 96 in
Dimensions (Interior): 471 x 87 x 91.8 in
Approximate Weight: 12960 lbs.
Other Explosive Storage Magazine Solutions
DynaLoc® Type 2 Outdoor Magazine
For storing high explosives outside your facility. The steel construction-lined hardwood storage magazines keeps your explosive components or ammunition secure and safe from theft and weather events.
DynaLoc® Type 3 Daybox for Explosives
Use Type 3 storage magazines, also known as “day boxes,” for the transport and temporary, supervised storage of explosives. Adhere to ATF and DOT regulations
DynaLoc® Type 2 Indoor Magazine
Durable Type 2 indoor magazines and cap boxes for storing high explosives (up to 50 lbs.) inside your facility.