|  | Size/nominal width |  | 3 foot (0.9 m) | 4 foot (1.2 m) | 6 foot (1.8 m) | 
  
    | Dimensions | Exterior dimensions W x H x D
 | mm/in | 1000 x 1568 x 805 39.4 x 61.8 x 31.7
 | 1300 x 1568 x 805 51.2 x 61.8 x 31.7
 | 1900 x 1568 x 805 74.8 x 61.8 x 31.7
 | 
  
    | Interior dimensions W x H x D
 | mm/in | 900 x 780 x 630 35.4 x 30.7 x 24.8
 | 1200 x 780 x 630 47.2 x 30.7 x 24.8
 | 1800 x 780 x 630 70.9 x 30.7 x 24.8
 | 
  
    | Shipping dimensions | mm/in | 1372 x 1727 x 1168 54 x 68 x 46
 | 1575 x 1727 x 1168 62 x 68 x 46
 | 2261 x 1727 x 1168 89 x 68 x 46
 | 
  
    | Working height of front window
 | mm/in | Choice of 203 mm (8 inches) or 254 mm (10 inches) | 
  
    | Maximum opening height of front window
 | mm/in | 432 mm (17 inches) | 
  
    | Weight | Net weight | kg/lbs | 169 (372) | 193 (426) | 272 (599) | 
  
    | Shipping weight | kg/lbs | 262 (577) | 297 (654) | 400 (880) | 
  
    | Electrical data | Voltage | V | Choice of 120 or 230 | 
  
    | Frequency | Hz | 50 / 60 | 
  
    | Filter specification | H14 HEPA EN 1822, 99.995% @ MPPS | 
  
    | Certification | NSF/ANSI 49, cULus, CE | 
  
    | Ergonomics | 
    | Lighting Power | fc (lx) | 80-110 (850-1200) | 90-120 (950-1300) | 
  
    | SmartPort | Two 3 inch (80 mm) diameter user-modified pass-through cable ports, one on each side wall
 | 
  
    | Receptacles | 120 V | 2 GFI protected duplex - left and right side | 
  
    | 230 V | 2 single receptacles - left and right side | 
  
    | Service Valves | Up to 6 total (3 on each side wall) | 
  
    | 8-inch (203 mm)
 front opening
 | 
    | Sound pressure level | dB (A) | ≤ 65 | 
  
    | Energy consumption, operating set point
 | W | 150 | 180 | 360 | 
  
    | Energy Night Standby | W | 70 | 70 | 120 | 
    
    | Heat output operating
 | BTU/hr | 512 | 614 | 1228 | 
  
    | Heat output Night Standby
 | BTU/hr | 239 | 239 | 410 | 
    
    | Exhaust /inflow air volume
 | cfm (m³/h) | 207 (351) | 276 (468) | 413 (702) | 
    
    | Exhaust volume, thimble ducted
 | cfm (m³/h) | 270 (460) | 360 (610) | 540 (910) | 
  
    | 10-inch (254 mm)
 front opening
 | 
    | Sound pressure level | dB (A) | ≤ 65 | 
  
    | Energy consumption, operating set point
 | W | 170 | 190 | 335 | 
    
    | Energy consumption, night set-back mode
 | W | 70 | 70 | 120 | 
      
    | Heat output, operating mode (non-vented)
 | BTU/hr | 580 | 648 | 1143 | 
  
    | Heat output, night set-back mode
 (lights off, non-vented)
 | BTU/hr | 580 | 648 | 1143 | 
  
    | Exhaust /inflow air volume
 | cfm (m³/h) | 258 (439) | 344 (585) | 517 (878) | 
  
    | Exhaust volume, thimble ducted
 | cfm (m³/h) | 335 (570) | 445 (760) | 670 (1140) |