Economical Solution for Filling Holes
Compared to brush grommets, PolarDAMTM is less expensive and easier to install and remove. A surface mount brush grommet used to cover a 5" x 8" hole costs about $90, that same hole can be filled with PolarDAMTM for $10. Also, for many floor cutouts, around large pipes for example, brush grommets just can't fill the whole hole.
Compelling ROI
The costs of leaving gaps unfilled is surprisingly high.
| Cooling energy calculations | |
| 1 CFM of bypass air @ 20 degree F delta-T | 21.6 BTU's |
21.6 BTU's x 8760 hours | 189,216 BTUH |
189,216 / 3412 kw/BTU | 55.5 kwh |
| 55.5 kwh x $0.10/kwh | $5.55 for each 1 CFM of bypass air |
| Sample savings calculation | |
| 4" x 6" cutout at 0.05 inch of pressure | 92 CFM of bypass air |
| 92 CFM x $5.55 | $511 savings per year per cutout |