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So-Low Manual Defrost Freezers

Category Upright Lab Freezers
Manufacturer So-Low
Country of manufacture the United States of America

Our manual defrost freezers are ideal for various applications in the life science, biological and other research areas. Laboratory freezers to -20°C. Cold wall or in-shelf evaporator with manual defrost. Digital controls come standard with Hi/low Alarm, Battery Backup alarm, and alarm dry contacts.

Available in Mechanical or Digital controls (digital control units come standard with microprocessor digital controller, audible and visual alarms, and alarm relay contacts).

Please note: So-Low refrigerators and freezers are manufactured at the time the order is placed and go through extensive testing before they are released. A 2-3 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 0°C to -20°C
Cubic Feet 17 to 30
Alarms Yes (digital model only)
Controls Digital or Manual
Defrost Manual
Electrical 115/60 8.2A
Warranty (years) 1
Weight (lb) 345 to 385
Width (in) 32 to 35.5
Depth (in) 30.5 to 35
Height (in) 64.5 to 79


Manufacturer Specifications
Digital DHW20-20MDP x DHW20-30MDP
Temperature Range:  -20°C x 0°C to -20°C
Capacity: 20 cu ft / 558L x 30 cubic ft / 849L
Exterior w x d x h 32'' x 28.75'' x 82'' x 35.5'' x 35'' x 80''
Interior w x d x h 27'' x 20'' x 57'' x 32'' x 22.5'' x 65''
Control Digital with Setpoint and Actual Temperature Display
Alarm Battery Operated Alarm System with Audible and Visual signals for Mechanical and Electrical Failure
Remote Alarm Relay Relay for a hook-up provided Remote Alarm Relay
Defrost Manual Defrost
Refrigerant R134A Refrigeration system R404A Refrigeration system
Shelves 4 Fixed 3 Fixed ; 2 Adjustable
Door Features 6 In-Door Shelves Stainless Steel Handle
Storage Basket One Full-Access Sliding N/A
Lock Key Lock
Door N/A Right Hand Swing, Heavy Duty Lift Off Hinges
Voltage 115/60/1 x 115/60/1
Warranty One Year Warranty



Manual DHW20-20 DHW20-30
Temperature Range: -15°C to -20°C 0°C to -20°C
Capacity: 20 cu ft. / 558L 30 cu ft. / 849L
Exterior w x d x h 32.5" x 29" x 77" 35.5'' x 35'' x 72''
Interior w x d x h 27" x 21.5" x 52" 32'' x 22.5'' x 65''
Temp Control * Adjustable
Defrost Manual Defrost
Insulation *
Shelves * 3 Fixed, 5 Adjustable
Door Features * SS Handle
Storage Basket * N/A
Lock * Key Lock
Door * Single Solid, Right Hand Swing
Refrigerant * R404A
Evaporator *
Compressor *
Amps/Breaker *
Voltage 115/60/1
Supply Plug *
Weight *
Warranty * One Year Warranty

*-Data currently unavailable


Are the So-Low Manual Defrost Freezers UL listed?

No, but they are ETL listed, which is a similar marking from a different organization. Just like UL listing, ETL listing serves as proof of product compliance to North American safety standards in both the US and Canada.


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So-Low Manual Defrost Freezers Accessories