Forma* Environmental Chambers

• Wide temperature range of 0° to 60°C enhances the flexibility of the unit
• Relative humidity control via steam generator from above ambient to 95% at 37°C†
• Sophisticated digital controls
• Programmable ramp and soak cycles for temperature and RH†
• Durable cabinets feature true laminar airflow through side plenums for extremely tight uniformity
• Phenolic-coated evaporator for use in applications that create corrosive byproducts
• Manual control of defrost and refrigeration cycles
• Visible/audible safety alarms alert to over- and undertemperature conditions, deviation of humidity from set parameters (except Model 3920)

Durable Construction

• Cold-rolled steel, powder-coated cabinet
• 2.0 in. (5.1cm) thick, CFC-free, foamed-in-place polyurethane insulation
• Stainless-steel interior
• Solid stainless-steel adjustable shelves
• Directed horizontal airflow system for excellent uniformity
• Locking swivel casters ensure easy mobility during installation and cleaning
• Leveling feet provide stability and added safety in the lab

Broad Range of Options

• Interior lighting for Models 3920, 3940 and 3949‡
• Reinforced shelving and flooring for heavy loads
• Heatless dryer for lower humidity levels
• Access ports for probes, sensors
• Interior convenience receptacles
• CO₂ (IR sensor)
• 6 in. and 12 in. temperature chart recorder
• Other custom options available

• 11 cu. ft. (311.5L) capacity
• 208/220V 60 Hz, 15.0A
• 4-wire power cord (including ground)
• NEMA 14-20P plug
• 3 solid stainless-steel shelves
• Exterior D x W x H: 32 x 38 x 51.5 in. (81.3 x 96.5 x 130.8cm)
• Interior D x W x H: 27 x 31 x 24 in. (68.6 x 78.7 x 60.9cm)

Model 3913

• 11 cu. ft. (311.5L) capacity
• 220/240V 50/60 Hz, 15.0A
• 3-wire (including ground); to be hardwired to lockable fused disconnect switch
• Safety switch disconnect
• 3 solid stainless-steel shelves
• Exterior D x W x H: 32 x 38 x 51.5 in. (81.3 x 96.5 x 130.8cm)
• Interior D x W x H: 27 x 31 x 24 in. (68.6 x 78.7 x 60.9cm)

Model 3920

• 29 cu. ft. (821.2L) capacity
• 120V 60 Hz, 20.0A
• 3-wire power cord (including ground)
• NEMA 5-30P plug
• 6 solid stainless-steel shelves
• Exterior D x W x H: 32 x 38 x 88.5 in. (81.3 x 96.5 x 224.8cm)
• Interior D x W x H: 27 x 31 x 60 in. (68.6 x 78.7 x 152.4cm)

Model 3940

• 29 cu. ft. (821.2L) capacity
• 208/220V 60 Hz, 15.0A
• 4-wire power cord (including ground)
• NEMA 14-20P plug
• 6 solid stainless-steel shelves
• Exterior D x W x H: 32 x 38 x 88.5 in. (81.3 x 96.5 x 224.8cm)
• Interior D x W x H: 27 x 31 x 60 in. (68.6 x 78.7 x 152.4cm)

Model 3949

• 29 cu. ft. (821.2L) capacity
• 6 solid stainless-steel shelves
• 220/240V 50/60 Hz, 14.0A
• 3-wire (including ground); to be hardwired to lockable fused disconnect switch
• Safety switch disconnect
• Exterior D x W x H: 32 x 38 x 88.5 in. (81.3 x 96.5 x 224.8cm)
• Interior D x W x H: 27 x 31 x 60 in. (68.6 x 78.7 x 152.4cm)

• Recorders (197075, 198036, 198039, 198042, 201144, 201145, 201146, 201147)
• Reach-In/Environmental Chamber Solid Stainless-steel Shelf (224139)
• Reach-In/Environmental Chamber Perforated Stainless-steel Shelf (224155)
• Reinforced Stainless-steel Shelf (224161)
• Fixed Reinforced Stainless-steel Shelf for two shakers (1900005)
• Stainless-steel Door Glass Cover, factory installed (190591)