• Frame Material: Powder-Coated Steel
• Height: 8'
• Depth: 20'
• Width: 8'
• Overall Dimensions: 8' x 20' x 8'
• Panel Material: Clear Acrylic
• Unit of Measure: EA
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Cleanroom; Hardwall, Extended ValuLine, Clear Acrylic Panels, 8' x 20' x 8'
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Terra Part #: 6600-21-VL-0820
Manufactured By: Terra Universal
Warranty: 1 year parts, 90 days labor
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Want a quote quickly ?
Submit a QuickQuote requestStatic-Dissipative PVC vs. Acrylic 
Compared to acrylic, static-dissipative PVC offers three benefits that reduce operating expenses and drive down overall ownership cost of a clean room, glove box, hood, desiccator, or other enclosure.
The resulting static cling makes it difficult to remove contaminants from the charged surfaces without the use of ionizing equipment or frequent cleaning with special anti-static solutions. Variations in the surface charges can lead to unpredictable release of aggregated particles, threatening contamination-sensitive material.
For this reason, expect acrylic to drive up the cost of keeping an acrylic enclosure contamination-free. 
An aseptic environment requires frequent sterilization with disinfectants such as alcohol. Unfortunately, most common biocides, including industry-standard IPA solutions, degrade acrylic, causing cracks and discoloration.
Static-dissipative PVC, on the other hand, resists alcohol and most other sterilizing solutions, supporting standard disinfecting procedures and extending the life of your enclosure. 
Acrylic’s most serious hidden cost becomes apparent when static-sensitive materials are destroyed or degraded by unpredictable electro-static discharge (ESD).
Whether it results from hand-wiping the acrylic surface or from the micro-frictional effects of a strong airflow, surface static charge poses serious threat to semiconductor, electronics, and other sensitive materials. In fact, acrylic supports the accumulation and discharge of up to 20,000 volts. This danger is especially acute in a low-humidity environment like a nitrogen-purged glove box or desiccator.
In critical applications, however, acrylic should be avoided. Lower total ownership costs – due to easier cleaning, sterilization, and ESD control – quickly justify the initial expense of a static-dissipative PVC enclosure.
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Hidden Costs of Acrylic Enclosures
Compared to acrylic, static-dissipative PVC offers three benefits that reduce operating expenses and drive down overall ownership cost of a clean room, glove box, hood, desiccator, or other enclosure. Contamination Control
Acrylic is a prolific static generator. The back-and-forth motion of wiping an acrylic surface creates positive and negative surface charges that attract and hold small particles.The resulting static cling makes it difficult to remove contaminants from the charged surfaces without the use of ionizing equipment or frequent cleaning with special anti-static solutions. Variations in the surface charges can lead to unpredictable release of aggregated particles, threatening contamination-sensitive material.
For this reason, expect acrylic to drive up the cost of keeping an acrylic enclosure contamination-free.
Don't Turn Your Clean Enclosure into a Particle Magnet! Non-dissipative plastics quickly accumulate surface charges that attract contaminants. If the panel on the left clings to this many test spheres, just imagine how many micro-particles it attracts!
Germ Control
An aseptic environment requires frequent sterilization with disinfectants such as alcohol. Unfortunately, most common biocides, including industry-standard IPA solutions, degrade acrylic, causing cracks and discoloration.Static-dissipative PVC, on the other hand, resists alcohol and most other sterilizing solutions, supporting standard disinfecting procedures and extending the life of your enclosure.
ESD Control
Acrylic’s most serious hidden cost becomes apparent when static-sensitive materials are destroyed or degraded by unpredictable electro-static discharge (ESD). Whether it results from hand-wiping the acrylic surface or from the micro-frictional effects of a strong airflow, surface static charge poses serious threat to semiconductor, electronics, and other sensitive materials. In fact, acrylic supports the accumulation and discharge of up to 20,000 volts. This danger is especially acute in a low-humidity environment like a nitrogen-purged glove box or desiccator.
Why Consider Acrylic?
Despite these disadvantages, acrylic is widely used in clean rooms and other critical environment applications. Its low initial cost, light weight, transparency, and strength make it an attractive choice in many situations, and Terra offers most of its enclosures in acrylic in order to provide a competitive option.In critical applications, however, acrylic should be avoided. Lower total ownership costs – due to easier cleaning, sterilization, and ESD control – quickly justify the initial expense of a static-dissipative PVC enclosure.
Terra Part # 6600-21-VL-0820
$20,751
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Accessories related to Terra Part # 6600-21-VL-0820
65512
Cleanroom; Hardwall, Extended ValuLine, Clear Acrylic Panels, 8' x 20' x 8'
• Customize ISO class
• COMPONENTS INCLUDED:
• Steel frame – posts and beams of 2” (51 mm) square tubing, powder coated
• Steel ceiling grid – joists and cross members 3” (76 mm) T-bars
• (2) Acrylic swing doors, each mounted on opposing walls
• Crate, wood
• ACCESSORIES INCLUDED:
• LED Light Modules – 48 W, 4500 lumens, 120-277 VAC, as required to meet rating
• Power Supply Unit – Switched supply to six-receptacle unit, 20W 120 VAC, as required to power FFUs and lights
• Ceiling Panel -- 2' x 4' and 2' x 2', polypropylene, white, as required to complete ceiling grid
• Order number of HEPA Fan/Filter Units separately to meet desired ISO cleanliness rating
• All electrical components UL and UL-C listed
• Requires UL Listing Declaration (order separately) for customized cleanroom electrical system, which helps meet municipal and other permitting requirements that may apply
• Formed by combining two 8'W x 10'D cleanrooms, with swing door entries on opposite sides
• Frame Material: Powder-Coated Steel
• Height: 8'
• Depth: 20'
• Width: 8'
• Overall Dimensions: 8' x 20' x 8'
• Panel Material: Clear Acrylic
• Unit of Measure: EA
• Marks & Listings: UL, ULC
• Dimensions, Product: 96" W x 240" D x 96" H
• Weight, Shipping: 2,249 lb
• Dimensions, Shipping: 133" W x 70" D x 41" H
• Package Type: Crate
Manuals & Resources
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Features and Benefits
Valuline vs. Standard Cleanrooms
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How are Terra Universal’s ValuLine and standard cleanrooms different? Is the standard line cleaner?
Ordering Information
Both cleanroom lines meet the same quality standards for design and materials while also providing essentially the same airflow, which is based on the configuration of fan/filter units.
However, Terra’s standard cleanrooms utilize Power Distribution Modules, which can accommodate more FFUs and light fixtures than the basic power supply included on ValuLine cleanrooms. PDMs also feature quick-connect fittings and a better control panel. ValuLine cleanrooms do not include the decorative top trim and status indicator lights included on standard line cleanrooms.
Each standard line cleanroom is built-to-order, can be made in virtually any reasonable size and can use alternative materials such as stainless steel frames. ValuLine cleanrooms are preconfigured from standard components to produce ten standard sizes from 6’ x 6’ up to 12’ x 12’ in each of two heights (7’ and 8’), allowing shorter lead times.
Fan / Filter Units with HEPA Filter
| Model | Nominal Dimensions* Inches (mm) | Avg. CFM @ MS (m3/h) | High speed Airflow FT/min(m/s) | Medium speed Airflow FT/min(m/s) | Low speed Airflow FT/min(m/s) | High speed Run Amps (watts) @ 60Hz | Medium speed Run Amps (watts) @ 60Hz | Low speed Run Amps (watts) @ 60Hz |
|---|---|---|---|---|---|---|---|---|
| 2 x 4 | 23.63 x 47.63 x 13 (600 x 1210 x 332) | 717 (1218) | 115 (.58) | 102 (.51) | 93 (.47) | 4.3A (512W) | 3.5A (416W) | 3.3A (393W) |
| 2 x 3 | 23.63 x 35.63 x 13 (600 x 905 x 332) | 602 (1023) | 121 (.61) | 116 (.59) | 106 (.54) | 4.1A (500W) | 3.1A (378W) | 2.7A (329W) |
| 2 x 2 | 23.63 x 23.63 x 13 (600 x 600 x 332) | 558 (948) | 172 (.87) | 166 (.84) | 162 (.82) | 3.9A (472W) | 2.8A (339W) | 2.4A (290W) |
In Stock Modular Cleanroom Components
Since each modular cleanroom component is pre-tested and stocked, room pre-assembly is no longer required. Our lead times consist solely of the time it takes draw, package and ship the components to you.
Long Running FFU Motors
Terra’s filter fan unit motors are rated for 5 years of continuous, 24/7 operation, if the HEPA filters are consistently replaced. To accurately monitor your HEPA filter’s saturation levels, purchase Terra’s audible and visual filter replacement alarm system.
WhisperFlow® Cleanroom Fan Filter Units
Design features internal baffling and an aluminum diffuser to provide quiet operation along with uniform air speed for ISO-compliant laminar flow.
Aluminum Frame Swing Door
Light-weight, easy to install, and includes concealed pneumatic door closer.
Adjustable IsoVents™ Help Balance Differential Pressure
Cleanroom wall panels include adjustable exhaust vents to help balance differential room pressure to achieve the desired ISO requirements.
Interchangeable Panels for Quick Install
Wall panels are mounted by clean and attractive mirror-finished stainless steel L-brackets that clamp the panel in place, creating a showcase cleanroom and allowing panel change-out in minutes, with no special tools.
Adjustable Cleanroom LED Light Panels for Perfect Light Balance
Cleanroom LED panels are available with dimmable brightness and adjustable color temperature to achieve the perfect balance of light. LED panels have a longer service life, are more energy efficient, and emit less heat than conventional fluorescent lights.
Cleanroom LED Light Panel with Emergency Power Supply, 2' x 2'
Cleanroom LED lights are equipped with emergency back-up batteries to ensure continued operation in the event of a power failure.
Clean and Durable Powder Coat Finish
Terra’s signature white powder coat finish provides a high quality, durable barrier to protect against corrosion, plus a clean and attractive aesthetic. The advanced heat-fused formulation exceeds ASTM and ISO paint standards to resist chipping, scratching, fading, and wearing.
WhisperFlow Quiet Operation Reduces Distracting Background Noise
Exposure to loud noises can lower the ability to focus on work and listen selectively, which may also lead to safety issues. Typical AC units can be annoyingly loud, measuring in the range of 70 dB (comparable to a vacuum cleaner). Terra’s WhisperFlow design produces far lower noise levels for a quiet environment comparable to a library. At 90 ft/min output, units measure under 50 dB from only 1 ft away (roughly 75% quieter than 70dB).
Seismic Safe Cleanroom Design
Terra’s modular cleanrooms are designed with seismic safety in mind. Rigid steel frames and ceiling grids are designed with sufficient factors of safety to provide vertical and lateral strength recommended by professional engineers. Both hardwall and softwall designs can be installed to adhere to local seismic codes. Optional seismic and structural calculations can be drafted and stamped by a licensed PE to help meet municipal permitting requirements.
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.
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.
High-Throughput Cleanroom Manufacturing
Over the past 5 years, Terra has manufactured nearly 1,500 UL-approved cleanrooms at industry-leading build times. Terra’s versatile modular cleanroom frame and panel designs adapt to any floor plan requirement. The UL-rated and scalable plug-and-play power distribution system further simplifies installment of FFU's and lights to cleanrooms of any size.
4,000 Worldwide Cleanrooms
Since 1976, Terra has designed and manufactured over 4,000 cleanrooms for companies at the leading edge of high technology
Complete Order Transparency
Using Terra’s OnTrak system, our customers can view real-time production updates, receive shipment notifications and track their orders until they arrive at their facility
Comprehensive Service Provider
Terra’s portfolio of services includes white glove delivery, product installation, equipment certification, validation documentation, cleaning and disinfection services, engineering consultation, and structural seismic analysis
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