Energy Efficient Solutions CURRIES energy efficient solutions will not only protect you from the elements, but they will save you money as well. Thermal break and CURRISeal frames prevent the loss of heat and stop frost from forming on the inside of your opening. And the 707 Series Door with polyurethane core provides complete resistance to the harshest winds that mother nature can create. "With more focus on the need to provide energy efficient openings, CURRIES is now testing our doors and frames to determine the operable U/R values per the most current test standards, ASTM C1363 (thermal transmittance) and ASTM E283 (air infiltration). These tests include other ASSA ABLOY Group hardware products to give building owners a better indication of actual thermal performance. Click on the links to the right for more information.