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3 cups
Blueberries
3 cups
Flour
1½ cups
Butter
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A superior technology designed to minimise energy loss through your windows
Thermoflex Warm Edge Spacer
Thermoflex Dual Seal Spacer
The design differs to standard Thermoflex Warm Edge Spacer in that it has steps along its edges for the application of Polyisobutylene (PIB) primary sealant. The application of both a primary and secondary seal offers all the advantages of a traditional dual seal tube spacer system.