SKU: 61859887100

So-Low Explosion Proof Manual Defrost Refrigerator

Sale price$4127.40 Regular price$4586.00
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Description

So-Low Explosion Proof Manual Defrost RefrigeratorOverview Hazardous Location Refrigerators(+4C) are designed to meet National Fire Protection Agency (NFPA) and OSHA guidelines for the refrigerated storage of volatile and non volatile materials in Hazardous Locations, Class 1, Division II, Group C & D. Power cord is not included. Final power connections at site must be hardwired to meet local codes. All spark generating electrical components and connections (compressor, thermostat) are isolated and

Overview

Hazardous Location Refrigerators(+4°C) are designed to meet National Fire Protection Agency (NFPA) and OSHA guidelines for the refrigerated storage of volatile and non-volatile materials in Hazardous Locations, Class 1, Division II, Group C & D. 
Power cord is not included. Final power connections at site must be hardwired to meet local codes. 

All spark generating electrical components and connections (compressor, thermostat) are isolated and sealed in vapor-proof enclosures. Electrical wiring is hardwired for additional safety measures.Power cord is not included. Final power connections at site must be hardwired to meet local codes. These units are not intended for use in general clinical or research laboratories. See Flammable units.

So-Low's various Explosion Proof / Manual Defrost Freezers, Refrigerators, and Combination units, offer a diverse range of options to fit your needs for Explosion Proof products. These 30 cu. ft. systems have two inch solid urethane foam insulated doors, sturdy cam-lift hinges, and "lock-open" feature for "hands-free" access provide a secure and sturdy environment.

Features

  • 22 Gauge Cold Roll Steel Exterior
  • 26 Gauge Galvanized Steel Interior
  • High Luster Baked Enamel Surface Coating
  • 2-3/8 inch (6cm) Urethane insultation
  • 2-Inch Solid Urethane Foam Insulated Doors
  • Sturdy Cam-Lift Hinges With Lock-Open Feature
  • Adjustable Cantilever Shelves (Epoxy Coated)
  • 6-Inch Adjustable Legs
  • CFC-Free Refrigerant and Insulation
  • Adjustable Thermostat
  • Manual Defrost
  • UL Listed

Please note: So-Low explosion proof refrigerators and freezers are manufactured at the time the order is placed and go through extensive testing before they are released. A 4-6 week lead time should be expected.

Some of the accessories/options available for this product are factory installed and must be purchased at the same time your So-Low freezer / refrigerator is ordered. Please add them to your cart with your freezer / refrigerator before checkout so that they may be included with the submission of your order to the manufacturer for installation during production.

Key Attributes
Min. Temperature 1°C to 10°C
Cubic Feet 30
Alarms No
Controls Manual
Defrost Manual
Electrical 115 V /60 Hz / 7 A
Warranty (years) 1
Weight (lb) 575
Width (in) 35
Depth (in) 35
Height (in) 72

 

Manufacturer Specifications
  DHH4-30SDRX

Temp Range:

1°C to 10°C

Capacity:

30 cubic ft.

Exterior
w x d x h

35'' x 35'' x 72''

Interior
w x d x h

32'' x 22.5'' x 65''

Temp Control Exterior Adjustable Mechanical
Door Single Solid, locking
Casters Four Adjustable
Shelves Five Adjustable Epoxy Coated
Insulation Polyurethane foam
Refrigerant R134A CFC free
Compressor 1/2 hp
Evaporator Cold Wall
Thermostat Exterior adjustable
Defrost Manual
Voltage: 115/60/1
Amps/Breaker  7/15
Supply Plug none/ hardwired
Weight 575 lbs.
Warranty 12 months parts and labor, Compressors additional 4 years, no labor
  This unit Meets NFPA and OSHA guidelines for Hazardous Locations, Class 1, Division II, Group C & D.
FAQ

Are the So-Low Explosion Proof Manual Defrost Refrigerators also suitable for flammable material storage?

Yes, they are.

 

What safety designs make this unit suitable for use in a Class 1, Division II, Group C & D environment?

The unit is spark-proof, meaning that all spark generating electrical components and connections (compressor, thermostat) are isolated and sealed in vapor-proof enclosures such that they will not ignite any flammable / explosive vapors unless they are damaged. This is also why the unit must be hard-wired and the unit does not come with a power cord: standard electrical outlets carry a risk of sparking and, therefore, ignition of vapors.

 

Are there special installation considerations for an explosion-proof refrigerator?

Yes. The freezer must be hardwired to the building's electric and cannot be connected to an electrical outlet via a plug, as that carries a sparking risk. Furthermore, the room / area around the freezer must also be explosion proof. For instance, any nearby equipment also must be explosion proof, any lighting and / or other fixtures must be explosion-proof, and there cannot be any electrical outlets.

ProTip

The So-Low Explosion Proof Manual Defrost Refrigerators are identical to the American Biotech Supply Standard Hazardous Location Refrigerators, which are less expensive. They are literally the same units, with the same warranty and certifications. Just get the cheaper one.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 61859887100

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4.2 ★★★★★
Based on 27 reviews
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Verified Purchase
Tammie
Massapequa, US
★★★★★ 5
Duke proof!
Set name: DinoBone 2-Pack XL
These toys are great for my puppy. He’s an aggressive chewer and these are standing up to his test!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
S
Verified Purchase
Shannon Bentley-Stewart
Whiting, US
★★★★★ 5
Durable
Set name: DinoBone 2-Pack XL
Very durable. My dog has been chewing on it for a week and it still looks almost new.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
C
Verified Purchase
Chris
Massapequa, US
★★★★★ 5
My dog likes them
Color: brown
Dogs play with these and chew on them
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 12, 2026
B
Bump Bump
Draper, US
★★★★★ 5
Highly recommended for any owner of a "Super Chewer."
Rating: ⭐⭐⭐⭐⭐ (5/5) Title: Finally, toys that can actually withstand my Labrador’s jaws! If you own a "power chewer," you know the struggle: you bring home a new toy, and within ten minutes, it’s shredded into a thousand pieces of foam and plastic. After going through countless toys that promised durability but failed within a day, I decided to give the WOWBALA 2-Pack Indestructible Dog Toys a try—and I am genuinely impressed. The Durability Factor The biggest selling point here is the material. These are made from high-density, food-grade nylon, and you can feel the quality the moment you take them out of the package. They are solid, heavy-duty, and have held up perfectly against my Lab’s relentless chewing. Even after a week of heavy use, there are only minor surface marks where his teeth have made contact, rather than the dangerous chunks that usually break off other toys. Design & Engagement The pack comes with two different shapes—a stick and a ring—which is a great variety. The curved, ergonomic design of the stick makes it very easy for my dog to hold between his paws while he chews, and the textured surface seems to really hit the spot for him. I’ve also noticed that it helps keep his breath fresh and his gums healthy since the texture acts almost like a toothbrush while he plays. The "Milky" Scent One thing I was initially skeptical about was the "milky scent." I wondered if it would be overpowering, but it’s actually quite subtle. It was strong enough to immediately pique my dog’s curiosity right out of the box, but it doesn't leave a weird smell on my carpet or hands. It’s clearly effective, as he keeps coming back to these toys even when he has others scattered around the room. Peace of Mind Beyond just being tough, I appreciate that they are non-toxic and dishwasher safe. After a long day of outdoor play in the mud, being able to just toss these into the dishwasher and have them come out clean and sanitized is a huge convenience. Final Verdict If you have a medium to large breed dog that loves to destroy everything in sight, these toys are well worth the $15.99 investment. It’s rare to find a product that lives up to the "indestructible" label, but these truly do. They’ve been a lifesaver for keeping my dog occupied while I’m working from home, and it’s a relief not having to play "clean up the debris" every evening. Pros: Extremely durable high-density nylon. Great value (2-pack). Easy to clean (dishwasher safe). Engaging design for teething, training, and boredom relief. Safe and non-toxic. Cons: Because they are hard nylon, be careful using them indoors on hardwood floors—they can be a bit noisy when dropped! Highly recommended for any owner of a "Super Chewer."
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Reviewed in the United States on May 19, 2026
J
Jill R
Pawtucket, US
★★★★★ 5
These are way better than I expected and hold up to our aggressive chewer spectacularly!
I got these specifically for our newest pup (an 8 month old lab/pitbull mix--she's a big puppy, lol) who is obsessed with toys and chewing. She has a tendency to go through her toys quick, both chew toys and soft ones, so I wanted something that would last a bit longer for her because I can tell she gets a bit sad when we have to trash one that's hit its lifespan. So far, these have been a big hit! They're the perfect size for her to pick up, the chicken claw-style texture is great for both keeping her interested and giving her some grabbing options, and they do seem to hold up to their claim of being made for aggressive chewers! There's obviously some wear, but it looks like expected chew toy wear; no claws have snapped off, and her chew marks look relatively minimal compared to what she's done to other chews. I also appreciate that these came in a two pack; we have a smaller dog, and while these are technically big for him, he enjoys having one to play with and chew on as well. These have been a pleasant surprise and I actually think I'll come back to buy them again whenever they're spent! Definitely a worthy purchase!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026

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