The R-valve is not calculatable because the Attic Ladder Insulator uses the dead space it creates above the attic ladder to create part of its insulating valve. This is a proto type, I'm interested in someone helping me market it.
butlerjamesd 4 months ago
how much is it? Your website is not helpful . What is the R-value?
mghia 4 months ago
The R-valve is not calculatable because the Attic Ladder Insulator uses the dead space it creates above the attic ladder to create part of its insulating valve. This is a proto type, I'm interested in someone helping me market it.
butlerjamesd 4 months ago
how much is it? Your website is not helpful . What is the R-value?
mghia 4 months ago