The ZWO LRGB  36mm filter has better transmission, better coating,  better color separation the RGB color combine weights will be approximately 1:1:1
 
Fine-optically polished to ensure accurate 1/4 wavefront
more than 92% transmission at passband
Infrared wavelength 700-1100nm cut-off
Precision off-band blocking
Multi-layers anti-reflection coating
Small spectral “gap” to minimize effect of light pollution
More parfocal – thickness  2mm
 
Technical Parameter:
 
Size: 36mm
Thickness: 2mm