Patent ID: 11959272
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 10:
11. The apparatus of claim 10, wherein:
the first material insulation element comprises an insulation element having a resistance factor in the range of R-3.0 per inch to R-8.0 per inch;
the first heat energy highly reflective surface has an emittance of less than or equal to 0.05;
the second heat energy highly reflective surface has an emittance of less than or equal to 0.05;
the second material insulation element comprises an insulation element having a resistance factor in the range of R-3.0 per inch to R-8.0 per inch;
the third heat energy highly reflective surface has an emittance of less than or equal to 0.05;
the fourth heat energy highly reflective surface comprises has an emittance of less than or equal to 0.05;
wherein a width of the first air space between the first pair of parallel surfaces is about 0.75 inches; and
wherein a width of the second air space between the second pair of parallel surface is about 0.75 inches.