The Hawthorne Double Hung Features:
- Heavy walled PVC framing acts as a natural insulator
- Closed cell compression seal at sloped sill resists air and water penetration
- Fin-Seal weather stripping at sill further reduces air infiltration
- 3/4″ Insulating glass provides optimum energy efficiency
- Dual hollows at lift rail add strength and insulation
- InnovativE® high-performance glass utilizes Low E coating specifically engineered for local requirements
- “Warm edge” low conductance spacer resists energy flow through the edge of glass
- Rigid leg on sill prevents “screen rattle” even on windy days
- Coil Constant Force System is the strongest, most durable and never needs adjusting.
