Lighting glass img

Listra H type prismatic diffusion filters are characterized by the following technical parameters:

Filter thickness 4 mm
Dimensional tolerance +/- 0,5 mm
Ground edges  
Hardness 6-7 degree in Mohs scale
Density 2,51 g/cm³
Chemical resistance IV hydrolytic class
Thermal resistance max. 270 º C
Heat transmission coefficient 6,05 W/m² x K
Resistance to bending 250 MPa
Light transmittance 89%
Uniform load strength 150 MPa
Linear expansion 9 x 10-6