NSF Approved certified

NSF Approved

UL Certified certified

UL Certified

DOE 2017 Compliant certified

DOE 2017 Compliant

Portable Cool Storage Boxes

Portable Cool Storage Boxes cover complete 8'x8'x8' walk-in cooler and freezer units alongside prehung swing, sliding, and French replacement doors. Built for restaurants, grocery, food processing, and cold-storage facilities, these NSF-approved, factory-direct units from Detroit deliver durable, energy-efficient refrigerated storage with financing and custom sizing available.

8'x8'x8' High Walk-In Cooler or Freezer Box
Walk-In Cooler Replacement Door 36" x 78" — Prehung with Frame
Walk-In Cooler Replacement Doors Prehung with Frame
Walk-in Cooler Sliding Doors Prehung with Jamb Sandwich Frame and Header
Walk-In Freezer French Doors — Prehung with Frame
Walk-In Freezer Replacement Doors (Prehung with Frame)
Walk-in Freezer Sliding Doors (Prehung with Jamb Sandwich Frame and Header)
8'x8'x8 High Walk-In Cooler or Freezer Box
Custom Cooler Doors

Our Range of Products

8'x8'x8' High Walk-In Cooler or Freezer Box

8'x8'x8' High Walk-In Cooler or Freezer Box

  • 8'x8'x8' turnkey cooler or freezer box
  • Save $2,000 off regular $9,800 price
  • Flexible financing via MyCloudFunding
Walk-In Cooler Replacement Door 36" x 78" — Prehung with Frame

Walk-In Cooler Replacement Door 36" x 78" — Prehung with Frame

  • R32 rigid foam core for superior insulation
  • NSF-approved chrome lockable latch hardware
  • 16-gauge aluminum diamond plate kick plates
Walk-In Cooler Replacement Doors Prehung with Frame

Walk-In Cooler Replacement Doors Prehung with Frame

  • 65 prehung cooler door sizes in stock
  • Drop-in install in about 1 hour
  • Save up to $2,000 on select sizes
Walk-in Cooler Sliding Doors Prehung with Jamb Sandwich Frame and Header

Walk-in Cooler Sliding Doors Prehung with Jamb Sandwich Frame and Header

  • 18 sizes from 36"x78" up to 13'x10'
  • Electric power sliding option available
  • Heavy-duty track built for forklift traffic
Walk-In Freezer French Doors — Prehung with Frame

Walk-In Freezer French Doors — Prehung with Frame

  • Wide French double-door freezer access
  • Sizes from 36"x78" up to 78"x115"
  • Heated frame option prevents ice buildup
Walk-In Freezer Replacement Doors (Prehung with Frame)

Walk-In Freezer Replacement Doors (Prehung with Frame)

  • 51 in-stock sizes for drop-in replacement
  • Heated frame stops frost and door-stick
  • Save up to $1,340 off regular pricing

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Frequently Asked Questions

What sizes do portable cool storage boxes come in?

Our complete walk-in cooler/freezer boxes are available in an 8'x8'x8' footprint, ideal for restaurants, ghost kitchens, and c-stores. Replacement doors range from 30" to 96"+ wide and up to 130" tall, with custom sizing available at no upcharge for non-standard openings.

Can a portable cool storage box be used as both a cooler and a freezer?

What's included with a walk-in cooler or freezer box purchase?

Do you offer financing for cold storage equipment?

How long does installation typically take?

What's the difference between a heated frame and a standard frame door?

Are these doors compatible with any brand of walk-in cooler or freezer?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Restaurants & Foodservice

Restaurants & Foodservice

Walk-in boxes and doors provide reliable cold storage for restaurant kitchens, ghost kitchens, and food trucks.

Grocery & Convenience Stores

Grocery & Convenience Stores

Compact and large-format walk-in coolers and freezers keep perishables fresh in c-stores, bodegas, and supermarkets.

Food Processing & Cold-Storage Distribution

Food Processing & Cold-Storage Distribution

Heavy-duty sliding doors support forklift and pallet-jack access in processing plants and distribution warehouses.

Specialty Retail & Healthcare

Specialty Retail & Healthcare

Florists, breweries, dispensaries, and pharmacies rely on these units for temperature-sensitive product storage.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Why Foodservice & Cold-Storage Operators Choose ELT Custom Coolers

Factory-Direct Pricing

Buy straight from our Detroit factory with no distributor markup, real published lead times, and same-business-day quotes.

18+ Years of Cold-Storage Expertise

Family-owned since 2008, we've built countless walk-in coolers, freezers, and replacement doors for demanding commercial operations.

NSF & UL Certified Durability

Every door and box meets NSF food-safety and UL safety standards, engineered for years of heavy-duty commercial use.

Ready to Upgrade Your Cold Storage? Get Your Free Quote Today

Share your project details and we'll respond same business day with pricing, lead times, and financing options.

Contact Us Today

You can also send us a quick email at sales@eltcustomcoolers.com.