Filler Blocks are made of zero halogen, intumescent elastomeric polymer. They are used to fill spaces within the frame which are not required for services, thus allowing spare capacity for future requirements.
Filler Blocks are available in the same materials as the tolerant Blocks.They are used to fill spaces within the frame which are not required for services, thus allowing spare capacity for future requirements.
The cable range is shown on the end of each block and indicates the maximum and minimum cable and/or pipe sizes , example 18/21 = 18mm min. 21mm max. For ease of reference each block is colour coded.