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Material Mounting Position Viewing Window Inside Width Inside Depth Inside HeightPriceUsually Ships inStocked
304 Stainless SteelFlush WallNo12"12"12" $7,2571-3 Days Stocked
304 Stainless SteelFlush WallNo18"18"24" $8,5235-9 Days
304 Stainless SteelFlush WallNo18"24"18" $8,7655-9 Days
304 Stainless SteelFlush WallNo24"24"24" $11,3941-3 Days Stocked
304 Stainless SteelFlush WallNo36"36"48" $15,91815-25 Days

Summary

  • Designed for installation in a fire-rated cleanroom or laboratory wall
  • Allows transfer of materials into and out of the controlled environment
  • Fire-rated door carries the UL-B label for 90-minute fire exposure (suitable for 2-hour wall rating)
  • Fire-rated door does not include a window
  • Opposite-side door has a standard LiftLatch and static-dissipative PVC window
  • 304 stainless steel chamber provides durable, chemical-resistant surfaces for easy cleaning
  • Automatic interlock mechanism offers high reliability with no maintenance
  • To maintain UL fire-rating certification, maximum fire-rated door dimensions not to exceed 36”W x 48”H

Specifications

Helena

Marks & Listings: UL, ULC

Fire-Rated Pass-Through Chambers

  • Fire Rated Chamber, 24 FIre-Rated Pass-Through, 24"W x 26.5"D x 24"H
  • Fire-Rated Pass-Through Chamber
  • Fire-Rated Pass-Through Door with No Window Fire-Rated Pass-Through Door
  • Pass-Through; EP 304 SS, CleanSeam, 18 Fire-Rated Pass-Through Chamber, 18"W x 20.5"D x 24"H

Features and Benefits

Fire-Rated Pass-Through Glass Window

The wire-free glass-ceramic incorporate a surface-applied, fire-rated film and is impact rated for additional safety. These windows feature a high level of clarity and offer protection from either side.

Pass-Through Chamber Interlock

Terra’s automatic mechanical interlock prevents cross-contamination by allowing one door to be open at a time. Encased in stainless steel, the mechanism is rated for millions of operations, more than enough to last the lifetime of the pass-through.

High Caliber Hardware

Seemingly small details like latches, ports, glides and hinges are often overlooked or ignored by other manufacturers, and later become the point of costly recurring maintenance or equipment failure. Terra’s products are made of long lasting, cleanroom compatible, top tier hardware. Individual components are carefully designed and rigorously tested to guarantee the highest quality, durability, and craftsmanship.

Stainless Steel Reinforced Doors and Handles

Doors on professional-grade pass-through chambers are reinforced with stainless steel frames, which lend rigidity, improve the seal, and extend the service life of the doors.

One Piece Elastomer Gasket

The white, “e”-shaped gasket provides a flexible seal that will not creep or deform over time. The gasket is made of a non-outgassing, thermoplastic elastomer that is resistant to harsh chemicals and extreme temperatures.

Spring-Loaded Fire-Rated Passthrough Hinge

Spring-loaded hinges provide the self-closing capability required in a fire-rated wall. Automatic closing doors also simplify operation for operators with hands full.

Insulated Fire-Rated Pass-Through Door

Terra’s fire-rated door meets UL 10B requirements for 90-minute fire exposure, including hose-stream testing. The inside of the door is lined with 2”-thick SuperWool® Plus insulation to reduce heat transfer from elevated room temperatures.

High Caliber Hardware

Seemingly small details like latches, ports, glides and hinges are often overlooked or ignored by other manufacturers, and later become the point of costly recurring maintenance or equipment failure. Terra’s products are made of long lasting, cleanroom compatible, top tier hardware. Individual components are carefully designed and rigorously tested to guarantee the highest quality, durability, and craftsmanship.

UL-Listed Fire-Rated Doors and Windows for Highest Safety and Quality

Ensuring the safety of your personnel, equipment, and facility is essential. UL is recognized around the world as the leader in product safety testing and certification. Terra's UL-listed fire-rated doors and windows are manufactured to the highest standards to maintain the integrity of your facility’s certified fire-rated wall.

Continuous Product Improvement

At Terra, we strive to develop and produce the highest quality products for our customers to improve health, safety, performance, and yields. Our product quality is enabled by high-grade manufacturing equipment and processes, 45 years of engineering and application expertise, and our commitment to continuously improve.

Long-Term Customers

Terra is committed to building long-term relationships with satisfied clients; 94% of orders each year come from repeat customers

Comprehensive Product Portfolio

Terra’s comprehensive product portfolio includes solutions for every application and budget. Our technical sales staff will guide you toward the product most suitable for your requirements.

Popular Accessories

For a full list of accessories, select a product then click Choose Accessories on that product page.
  • Support Brackets for Pass-Through Chambers
    Stainless steel support brackets are recommended for pass-throughs deeper than 24". Brackets fasten to the wall and the body of the chamber rests upon the horizontal bar; no fasteners are used on the pass-through itself.
  • Passthrough Chamber Door Stop
    This stainless steel door stop limits the arc of the pass-through door's swing to 90°, preventing damage to wall, door latch and other components. Door stops can be adjusted to allow other angles.
  • Electropolish Finish
    Electropolishing increases corrosion resistance and improves ease of cleaning with a smooth, reflective, mirror-like finish.
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