Glass

LoE 272

LoE I89/272

Double pane with argon between panes. Two coat LoE coating on one pane of glass.

U-factor .29 (R-value 3.4)

(A high quality, low expense option, we recommend for older homes)

LoE I89/272

(Triple pane equivalent exceeds Energy Star standards)

Double pane with argon between panes. Outside pane is LoE 272, inside pane is LoE I89.

U-factor .25 (R-value 4)

LoE 366

LoE I89/272

LoE 366

Double pane with argon between panes. Three coat LoE coating on outside pane of glass. Similar U-factor as LoE 272 but formulated for greater resistance to heat generated by sun. Works well in sun rooms and large glass areas on south side of house.