So-Low Explosion Proof Manual Defrost Freezer
SKU: 36384549192

So-Low Explosion Proof Manual Defrost Freezer

Sale price$4235.40 Regular price$4706.00
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Description

So-Low Explosion Proof Manual Defrost FreezerOverview Designed to meet National Fire Protection Agency (NFPA) and OSHA guidelines for the frozen ( 20C) and 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

Overview

Designed to meet National Fire Protection Agency (NFPA) and OSHA guidelines for the frozen (-20°C) and 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. 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. Ranging from 11 cubic feet to 30 cubic feet, these units are ideal for products of any size. 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
  • 6-Inch Adjustable Legs
  • CFC-Free Refrigerant and Insulation
  • Exterior Adjustable Mechanical 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 -15°C to -25°C
Cubic Feet 30
Alarms No
Controls Manual
Defrost Manual
Electrical 115 V / 60 Hz / 7A
Warranty (years) 1
Weight (lb) 375
Width (in) 35
Depth (in) 34
Height (in) 78

 

Manufacturer Specifications
DHH20-30SDFX

Temp Range:

 -18°C to -25°C

Capacity:

30 cubic ft. / 849 liters

Exterior
w x d x h

35'' x 34'' x 78''

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 4 Fixed Epoxy Coated
Insulation Polyurethane foam
Refrigerant R404A CFC free
Compressor 1/3 hp
Evaporator Cold Wall
Thermostat Exterior Adjustable Mechanical
Defrost Manual
Voltage 115/60/1
Amps/Breaker  7/15
Supply Plug none/ hardwired
Weight 375lbs.
Warranty 12 months parts and labor
Meets NFPA and OSHA guidelines for Hazardous Locations, Class 1, Division 1, Division II, Group C & D.
FAQ

Are the So-Low Explosion Proof Manual Defrost Freezers 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 freezer?

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.

 

What is the weight limit on the shelves?

Each shelf has a weight limit of 50 pounds.

 

Can the shelves be removed or can the freezer be built without shelves in it?

No. The fixed shelves are permanently in place and cannot be moved nor can the unit be built without the shelves, as refrigerant lines run through the shelves to help ensure more even temperature throughout the chamber.

 

What kind of refrigerant is used in the So-Low Explosion Proof Defrost Freezers?

R-404A

ProTip

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

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: 36384549192

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Bored_BloodletterofKorne
Massapequa, US
★★★★★ 4
auto-rolling dog ball
I don't know what i'm doing wrong but my pets don't enjoy it. It's mobile on both settings. I think it just needs a place inside to place a treat or something. Quality seems okay. The battery lasts a long time. They chewed on it for a little bit and left it, the material is okay. It's made of some kind of rubber.
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Reviewed in the United States on May 5, 2026
T
TKibbs
Phoenix, US
★★★★★ 5
Fun, Interactive Toy That Keeps Pets Engaged
Summary: A smart rolling dog toy that helps reduce boredom and keeps pets active with minimal effort. Pros: Auto-rolling feature keeps play engaging Durable, chew-resistant design Encourages activity and mental stimulation Simple to use with minimal setup Works well for solo play sessions Cons: May be noisy on hard floors Not ideal for very aggressive chewers Battery life could be longer Movement pattern can feel repetitive Overall review: This interactive dog ball is a great option for keeping pets entertained, especially when they need something to do on their own. The auto-rolling feature is the main highlight—it moves unpredictably enough to grab attention and keep dogs engaged for longer than a standard toy. It’s especially useful for reducing boredom when you’re busy or not able to actively play. The build feels fairly durable and holds up well for regular chewing, though it’s probably not meant for extremely aggressive chewers. On hard floors, it can be a bit noisy as it moves around, and over time, the movement patterns may start to feel repetitive to more curious dogs. Still, it does what it’s designed to do—encourage activity and provide stimulation. Overall, it’s a fun and practical toy that adds some variety to a dog’s play routine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
S
SibesOfSD
West Palm Beach, US
★★★★★ 5
Fun for an active dog!
I have an Australian Shepherd that absolutely loves this auto rolling dog ball! The ball is hard, but covered in a rubber coating. It is still loud when it hits the floor, but that is to be expected. My dog has chased this as well as thrown this ball, and it is still working flawlessly! This ball is definitely durable! It is easy to charge, and provides hours of entertainment! The ball is a great size for a medium dog. I recommend it!
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Reviewed in the United States on June 5, 2026
N
Nomadic Dogs
Lowell, US
★★★★★ 1
Auto-Rolling Dog Ball - loud with a mystery filling.
I got this to entertain my high energy dog and she does like it, but I don't. The ball is incredibly loud and doesn't move around nearly as much as I had hoped. When your dog picks it up, it turn their mouth into an amplifier making it louder. It bounces/vibrates around more than rolling. Which is not what I expected, but seems to be engaging enough for more dog (but that doesnt take much). What I really dislike is there is no way on the exterior to know what mode you are in and the inside is full of grease. To charge it and to see the lights to identify what mode it is involves opening it and touching the grease covered insides. The lights don't seem to match the instructions when trying to switch modes. The light is supposed to stay on for 3s. It doesn't for either mode and immediately cycles through other colors making it more confusing. The exterior seems durable enough for a moderate chewer and I like the color and texture. At $15, it seems like a fair price, but I can't recommend this at any price point. I don't feel comfortable letting my dogs play with toys that could easily expose them to an unidentified grease. Any greased components should be sealed. Not somewhere I have to touch for normal operation and potentially leak.
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Reviewed in the United States on April 4, 2026
A
Amazon Customer
Charlottesville, US
★★★★★ 5
Gentle vibrations and rolling
My sweet old man dog didnt know what to think of this at first. We introduced it to him without turning it on at first, like a regular ball. That was fine, he was good with that and he liked to go chasing it (its heavy because its mechanical so I wouldnt throw it, a light toss/roll is how we started). After we played that way a while we turned it on. At first he was confused as to why his toy was chasing him. It mostly vibrates and bops around a bit. But then my pup started chasing it and kicking it around like a little soccer ball and he LOVED THAT. A charge lasts quite a while too and if he doesnt play with it in for a few minutes it goes to sleep so its not just bouncing constantly and driving me crazy. My pup likes it and it gives me a rest from the constant throwing so I'm happy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026

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