Use this calculator to estimate the number of pillows
required to seal an opening. Enter numbers into spaces
where indicated. Update calculations by clicking any-where
outside this space or into the next space.
- Step 1. Enter the size of the opening in length
and height in inches. To enter the dimensions
in centimeters, select METRIC above. Estimate and
enter the amount of the area occupied by the penetrants.
Computed area of each opening is multiplied by a
factor of 1.4 to allow for required compression.
- Step 2. While the Calculator utilizes percentages,
you have the option of entering a hard number for
the amount of pillows of any size that you would
prefer to use. The percentage of the total area
requirement will be calculated and displayed at
right. Your totals must equal or exceed 100%.
- Step 3. Select percentages of the sizes you wish
to use to seal the opening. If you have chosen a
hard number for any sizes in Step 2, the percentage
will be calculated and displayed here. These percentages
can be adjusted up or down as desired. The results
for a single opening are displayed below. Enter
the number of openings to be sealed and the calculator
will extend the results.
IMPORTANT NOTE: Many different combinations
of pillow sizes and percentages can be used to successfully
seal a particular configuration. While the larger
pillow sizes are more economical, the smaller sizes
are more versatile. SSB26 are universally suitable
for most openings.
When sealing cable tray penetrations, two (2) SSB14
or SSB24’s are recommended for sealing the channel
area in 4” (102 mm) deep cable trays. SSB26’s
are recommended for 6” (152 mm) deep cable tray