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Terra Part # Price Ships in
120 V Tempered Glass 304 or 316 Stainless Steel Center Wall Optional ISO 4 24" 24" 24" 2635-75A-2-316-CM 66913 $28,246 21-31 Days 2
120 V Tempered Glass 304 or 316 Stainless Steel Flush Wall Optional ISO 4 18" 24" 18" 2635-80B-2-316 80449 $22,644 21-31 Days 3
120 V Tempered Glass 304 or 316 Stainless Steel Flush Wall Optional ISO 4 24" 24" 24" 2635-75B-2-316 80486 $26,220 1-3 Days 4
Quick Ship+ Available Only 1 left in stock
120 V Tempered Glass 304 or 316 Stainless Steel Flush Wall Optional ISO 4 27.5" 24" 50" 2635-78B-2-316 80440 $31,693 21-31 Days 5
Window Material
Mounting Position
Storage Racks
ISO Class
Inside Width
Inside Depth
Inside Height
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Request demo from your product specialist or add note to your order or quote request.

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Usually Ships in:
Free shipping in contiguous USA
Custom-configured product. Contact Terra by phone, chat or email for a project-specific quote.
Custom-configured product. Contact Terra by phone, chat or email for a project-specific quote.
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Product Details
Product Details
  • Available ISO Ratings: ISO 4, ISO 5, ISO 6, ISO 7, ISO 8
  • Designed without cracks and crevices which harbor particles and microbes
  • Unit includes double-wall construction, which triples product lifespan and totally eliminates cleaning of accessories
  • CleanMount design allows for installation without drilling and prevents cleanroom shutdown for rapid servicing or replacement
  • Medical grade, USP-compliant and compatible with every area of the hospital
  • Designed for life science applications, such as food science, personal medicine and biologics
  • BioSeal design uses a potted polyurethane seal to form a completely smooth surface on the inside of the door
  • Extruded edge around the chamber opening presses into the polyurethane for a tight seal
  • Removable door can be autoclaved
  • Automatic electronic interlock protects against inadvertent cross-contamination
  • Audible and visible alerts when the interlock is engaged
  • Optimal choice for sterile facilities
  • Flush-mount design eliminates horizontal surfaces where contaminants can collect
  • Double-wall construction isolates the interlock mechanism outside the transfer chamber
  • Smooth, unobstructed interior made of 316L stainless steel
  • Provides a common power supply for any electronic accessories added to the Smart® Pass-through
  • Includes two wireless, plug-in chimes connected to the doors, alerting personnel to door-opening

Marks & Listings: UL, ULC

BioSafe® Stainless Steel Pass-Through Chambers
Standard Features
  • A Seamless design
    Seamless design eliminates cracks for easy cleaning, sterilization
  • B Lipless construction
    Lipless construction allows easy materials transfer
  • C Doors
    Doors can be removed for autoclaving
  • D Double-walled construction
    Double-wall, sealed construction adds rigidity, isolates automatic interlock from transfer chamber
  • E BioSeal seals
    BioSeal edge seals against non-contaminating polyurethane set in door
  • G All-Stainless Steel construction
    All-Stainless Steel construction, including latches and hinges

Smart® BioSafe® CleanMount® Pass-Throughs Chambers

  • Smart Passthrough Watch Terra's Smart Pass-Through Video
  • CleanMount pass through and rack educational animation Watch Terra's CleanMount® Pass-Throughs and Racks Video
  • Smart® Pass-Through Chambers by Terra Universal
  • Cleanroom passthrough chamber with 3 interlocking doors for USP 800 hazardous compounding Smart® Pass-Through with “T” Shape 3-Door Design for USP 800 Hazardous Compounding
  • this video shows how the hands-free operation of the automatic pass-through door minimizes the potential for touch contamination Hands-Free, Automatic Pass-Through Door
Smart Passthrough
CleanMount pass through and rack educational animation
this video shows how the hands-free operation of the automatic pass-through door minimizes the potential for touch contamination
Features & Benefits

Features and Benefits

Learn More: CleanMount Basics

CleanMount BioSafe Smart Pass-Through Chamber

Don't risk operational delays or cleanroom shutdown because of a damaged door!
Terra's pass-through chambers last indefinitely, much longer than our standard product revision cycle. Pass-Through doors, however, are subject to damage, and ordering a legacy replacement can be costly and disrupt cleanroom operation. To avoid these problems, order replacements at the time you purchase the pass-through chamber; simply add “-RH” (for right-side hinge) or “-LH” (for left-side hinge) to the part number of the chamber.
CleanMount™ Design Allows Servicing or Replacement without Cleanroom Shutdown!
The simplicity of this CleanMount clamping system makes removal of the pass-through chamber just as easy as installation. If the wall cut-out framing is properly sealed prior to installation, the pass-through can be quickly removed and replaced without ever having to shut down the cleanroom. Maintain the positive-pressure differential and protect the cleanroom environment by sealing off the "dirty side" with plastic sheeting prior to removal. Loosen the lag bolt so that the pass-through lifts out of the wall without contaminating the room. Once out, the pass-through can be serviced, modified, or even replaced with an upgraded version to accommodate new applications.
A - Inside of flush-mount bracket on opposing side
B - Bolt guide extending from nut welded to opposing bracket
C - Mounting bolt (one, two or three per side, depending on chamber height) - standard sizes accommodate any wall thicknesses
D - Mounting bracket
E - Bracket cover
F - Standard wall (masonry or drywall)
Finish cut-out framing to minimize contamination exposure during servicing Terra's quick-mount system installs in under five minutes, regardless of wall thickness and without contamination
Access Clearances 
Width = W (nominal) – 1.88”
Depth = D (nominal) – 0.12”
Height = H (nominal) – 1.25”
Mounting Illustration with Door Swing Direction

Durable Double Wall Construction

BioSafe double-wall construction triples unit lifespan and totally eliminates cleaning of accessories

Lift-Off, Non-Shedding Door Hinges

Non-shedding, barrel-type door hinges allow the doors to lift off for thorough cleaning and decontamination (no tools required). Unlike industry standard continuous designs, these hinges comply with strict ISO levels.

Easy Installation Simplifies Cleanroom Commissioning

Installing conventional passthroughs can be very messy, making it impossible to perform while a cleanroom is operational. Terra’s innovative CleanMount® fastening system changes that, allowing for clean installation without drilling or penetrating the cleanroom wall. Framing a CleanMount® passthrough chamber on a finished cut-out eliminates the need for cleanroom shut-down during installation or service.

Non-Outgassing Bio-Seal

The BioSafe® pass-through door design features a non-outgassing polyurethane seal, potted flush with the interior door surface, that seats against a raised edge.

Removable Cart Ramps on All Floor-Mount Models

Floor-mount pass-through chambers include dual-side stainless steel cart ramps, sloped on three sides, that are removable for easy cleaning.

Highest Standards For Electronic Components

Terra’s electronic components are designed and built to the highest standards required by defense and semiconductor industries for long-term reliability and protection against damage, injuries, and electrical hazards.

Products Compliant With Your ISO Rating

Provide Terra with your desired ISO rating. We will tailor the product to meet your rating and supply a certificate of compliance appended to your invoice, to be included in your compliance package. All certificates are archived in Terra's system for quick retrieval.
Available Accessories
Popular Accessories
For a full list of accessories, select a product then click Choose Accessories on that product page.
  • Pass Through Racks

    Designed to be installed into any pass through. Install these racks within minutes with no special tools. Simply tighten a compression screw. Forgot to order racks before? No problem!
  • LED Recessed Light

    Activates when either pass-through door opens; flush with the wall surface, covered by a static-dissipative PVC lens.
  • Iris Scanner

    Fully automated iris scanner for secure, hands-free access (includes datalogging and optional secondary keycard reader).
  • Automatic Door

    Hands-free operation of the pass-through door, governed by the electronic interlock; automatically closes based on delay timer.
  • 90° Corner Design

    Custom door configurations are no problem. Install Smart pass-throughs in corner walls, with door swings in either direction.
  • UV Sanitizing Module

    Provides a timed cycle of 254 nm Ultra-Violet (UV) radiation to neutralize bacteria, viruses and mold spores within line-of-sight of the light fixture.
  • Available UV & LED lights

    Lights are recessed with a transparent lens for easy cleaning; UV-C module neutrailizes microbes using a timed disinfection cycle.
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Manuals & Resources
Manuals & Resources
Blog Post
Cleanroom Passthrough Features Comparison

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  • FasTrak 24/7 provides a 24/7 commitment to meet the shipping date YOU specify, regardless of quoted lead times.
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  • FasTrak 24/7 guarantees* to meet the agreed-to specified ship date.

Call for pricing. FasTrak service fees cover costs of additional services only, without additional profit.

 * Terra's FasTrak services limited guarantee: to ship on the ESD or date specified OR to refund up to 100% of FasTrak charges. This guarantee covers no direct, special, consequential or other damages and is strictly limited to up to 100% of the amount paid for FasTrak service. When a specified ship date is missed due to factors outside Terra's control (vendor performance, deliveries by shipping companies, etc.) and random factors such as accidents, the credit of up to 100% of the FasTrak 24/7 may not apply. FasTrak service requested after order placement will be quoted and accepted based on available time remaining before required ship date.