:: Double Hung NFRC Ratings
| Double Pane | Double Pane | Triple Pane | |
| Unit Type | Low-E Clear | Low-E Low-E | Low-E, Clear Low-E |
| Spacer Type | Super Spacer | Super Spacer | Super Spacer |
| Gas Fill | Argon | Argon | Krypton x 2 |
| U-Value | .30 | .29 | .21 |
| Condensation Resistance | 58 | 59 | 64 |
| Solar Heat Gain Coefficient | .30 | .28 | .26 |
| Visible Light Transmittance | .54 | .47 | .43 |