Narroline® double-hung window conversion kits are designed specifically to retrofit existing Narroline® windows (made from 1968 to 2013), turning them into easy-to-clean tilt-wash double-hung windows with High-Performance Low-E4® glass. They’re quick and easy to install with no window frame tear-out or trim modifications.
400 Series Conversion Kits for Narroline® Windows

Increased Energy Efficiency
High-Performance Low-E4 glass® comes standard and is 45% more energy efficient than ordinary dual-pane glass in winter and 56% more energy efficient in summer*, helping to reduce heating and cooling bills.
Easy Clean Tilt Feature
The tilt-wash feature allows you to conveniently clean both sides of the glass from inside your home.
Style Options
Add style with upgraded hardware options, grilles, exterior trim, art glass or patterned glass.
Easy to Install
The installation process is simple as your existing frame and trim are unaffected, so there’s minimal disruption to the home. Kit components are sized to fit your opening and include new upper and lower sash, balancers, jamb liners and hardware.

How to Know if You Have a Narroline Window
If your windows have these four items, then you have Andersen Narroline windows that can be converted into easy-to-clean tilt-wash double-hung windows using our 400 Series conversion kit.
• Two sash, both slide up and down
• Thin nylon cords in side jamb
• Andersen logo in lower corner of the glass
• Recessed sash lift

Each Conversion Kit Includes:
- Upper and lower sash with your choice of Low-E4® glass options
- Jamb liners
- Balancers
- Lock and keeper
Interior Colors
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Pine
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White
Exterior Colors
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White
-
Sandtone
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Terratone
Hardware Finishes
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White
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Stone
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Black
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Bright Brass
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Distressed Bronze
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Distressed Nickel
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Oil Rubbed Bronze
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Satin Nickel
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Antique Brass
Hardware Styles

Standard Lock & Keeper
Black, Stone, White

Estate Lock & Keeper (optional)
Antique Brass, Bright Brass, Distressed Bronze, Distressed Nickel, Oil Rubbed Bronze, Satin Nickel
Additional Options

Optional Lift Hardware: Classic Series
White, Stone

Optional Lift Hardware: Estate Lifts
Antique Brass, Bright Brass, Distressed Bronze, Distressed Nickel, Oil Rubbed Bronze, Satin Nickel
Glass Performance Options
U- FACTORHow well a product prevents heat from escaping. |
SOLAR HEAT GAIN COEFFICIENTHow well a product blocks heat caused by sunlight. |
VISIBLE LIGHT TRANSMITTANCEHow much visible light comes through a product. |
UV PROTECTIONHow well a product blocks ultraviolet rays. |
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SmartSun™ |
U- FACTORHow well a product prevents heat from escaping.![]() |
SOLAR HEAT GAIN COEFFICIENTHow well a product blocks heat caused by sunlight.![]() |
VISIBLE LIGHT TRANSMITTANCEHow much visible light comes through a product.![]() |
UV PROTECTIONHow well a product blocks ultraviolet rays.![]() |
Low-E4® |
U- FACTORHow well a product prevents heat from escaping.![]() |
SOLAR HEAT GAIN COEFFICIENTHow well a product blocks heat caused by sunlight.![]() |
VISIBLE LIGHT TRANSMITTANCEHow much visible light comes through a product.![]() |
UV PROTECTIONHow well a product blocks ultraviolet rays.![]() |
Sun |
U- FACTORHow well a product prevents heat from escaping.![]() |
SOLAR HEAT GAIN COEFFICIENTHow well a product blocks heat caused by sunlight.![]() |
VISIBLE LIGHT TRANSMITTANCEHow much visible light comes through a product.![]() |
UV PROTECTIONHow well a product blocks ultraviolet rays.![]() |