National Physical Laboratory

Hot box test elements - U-values of windows, doors, skylights, industrial doors measured to BS EN ISO 12567 Parts 1 and 2

Hot box test elementsWindows measured as specified in BS EN ISO 12567-1

(1198 ± 2 mm)  x  (1198 ± 2 mm)  x  (maximum thickness 150 mm)
 OR
(1478 ± 2 mm high)  x  (1228 ± 2 mm wid  )  x  (maximum thickness 300 mm)

 

Roof windows and skylights as specified in BS EN ISO 12567-2

(1198 ± 2 mm)  x  (1198 ± 2 mm)  x  (maximum depth 450 mm)

(1478 ± 2 mm high)  x  (1228 ± 2 mm wide)  x  (maximum depth 450 mm)

(1673 ± 2 mm high)  x  (1418 ± 2 mm wide)  x  (maximum depth 450 mm)

 

Residential doors measured as specified in BS EN ISO 12567-1

(1997 ± 3 mm)  x  (998 ± 2mm)  x  (maximum thickness 150 mm)

 

Industrial doors (measured as specified in BS EN 13241 and BS EN 12428)

(1998 ± 2 mm  x  1998 ± 2 mm)  x  special thickness considerations must be discussed 

 

General structures

(1997 ± 3 mm)  x  (998 ± 2mm)  x  (maximum thickness 150 mm)
 OR
(1478 ± 2 mm high)  x  (1228 ± 2 mm wide)  x  (maximum thickness 300 mm)

 

Heavy structures (> 100 kgs <  500 kg)

(1198 ± 2 mm)  x  (1198 ± 2 mm)  x  (maximum thickness 350 mm)

 

Evaluation of reflective insulation systems

Generally either:
(1478 ± 2 mm high)  x  (1228 ± 2 mm wide)  x  (maximum thickness 300 mm)
 OR
(1997 ± 3 mm)  x  (998 ± 2mm)  x  (maximum thickness 150 mm)

See separate page for more details

 

Special sizes

Outside of the sizes given above specimens of any size up to 2 m x 2 m can be accommodated at extra cost.


Contact

Customer Service tel: +44 20 8943 6245
E-mail: thermal_enquiries@npl.co.uk

Last Updated: 26 Jan 2012
Created: 28 Aug 2007