Forme for firkantede bloklys
- FIR-15/26: 26x26x150mm
- FIR-25/26: 26x26x250mm
- FIR-35/26: 26x26x350mm
- FIR-15/36: 36x36x150mm
- FIR-25/36: 36x36x250mm
- FIR-35/36: 36x36x350mm
- FIR-15/46: 46x46x150mm
- FIR-25/46: 46x46x250mm
- FIR-35/46: 46x46x350mm
- FIR-7,5/72: 72x72x75mm
- FIR-10/72: 72x72x100mm
- FIR-15/72: 72x72x150mm
- FIR-20/72: 72x72x200mm
- FIR-25/72: 72x72x250mm
- FIR-30/72: 72x72x300mm
- FIR-25/72: 72x72x350mm
Forme med plastbund:
- FIR-10/90 : 90x90x100 mm.
- FIR-15/90 : 90x90x150 mm.
- FIR-20/90 : 90x90x200 mm.