Replacement Window Terminology

Feldco® Double-Hung Window
1. Aluminum Master Frame
For superior structural strength and durability
2. Multi-Chambered Construction
Improves structural strength, noise abatement and insulation of double-hung windows
3. Beveled Exterior Profile
Provides a clean, modern appearance for your replacement double-hung windows
4. Double 7/8” Insulated Glass
Enhances strength and insulation of double-hung windows
5. Deep Seated Interlock
Increases security and reduces air infiltration in replacement double-hung windows
6. Locking Screen
Stops children from easily operating screens in double-hung windows
7. Childproof Safety Locks
Prevents injury from inadvertently tilting in sash
8. Finseal Weather Stripping
Reduces annoying drafts from your replacement double-hung windows
9. Non-Prorated Transferable Warranty
Protects your double-hung windows investment for years to come
10. Ventilation Lock
Discourages children or intruders from raising window, even when double-hung windows are open
11. Mitered Welded Sashes and Frame
Enhances durability of replacement double-hung windows
12. Polystyrene Foam Filled Chambers
Improves R-Value and insulating properties of replacement double-hung windows
13. Intercept® Warm Edge Technology
Long lasting energy performance
14. Block and Tackle Balance System
Ensures smooth up and down operation of double-hung windows
15. Insulating Foam Compression Wrap
Assures leak-free installation and double insulation
16. Virgin Vinyl Construction
Plastic free composite precludes double-hung windows from becoming brittle or turning yellow
17. Marine Float Glass
For improved optical transparency in replacement double-hung windows
18. Magnetic Bottom Sash Seal
Increases comfort by eliminating air infiltration
19. Equal Sight Lines
Allows for more natural light and unobstructed views from your double-hung windows
20. Reinforced Locking System
Enhances strength of lock and prevents break-ins