 Solid uPVC Vinyl Construction
This low-maintenance material will not dent, scratch or corrode like aluminum and wood materilas. It remains color fast throughout the material for a beautiful, long-lasting appearance. Vinyl also provides your replacement windows superior insulating value.
Four-Point Fusion-Welded Frames and Sashes
Eliminate separations and leaks, supplying your double hung vinyl replacement windows maximum strength and energy efficiency.
Parallel I-Beam Construction
The same technology used in bridge design is utilized to create a dramatically stronger double hung replacement window mainframe system.
Contoured Interior and Exterior Sash Design
Clean interior lines create a 'picture frame' appearance similar to that of traditional wood windows.
Easy-Flow Weight Management System with Draft Sentry
A weight management system that utilizes the identical cord material used in mountain climbing. This balance system enables you to easily operate your double hung window's sashes. The Draft Sentry Plug prevents air from entering through the double hung window's balance tracks and into your home.
Security is definitely a priority in the design of the Park Avenue Double Hung Vinyl Replacement Window!
 At the sash meeting rail, Dual Recessed Locks and Double Strength Stainless Steel Keepers are attached to the Exclusive Power Bar structural reinforcement. Unlike other designs in which the keeper is just screwed onto the vinyl, the Park Avenue® Double Hung Windows' stainless steel keeper is recessed and pinned into the vinyl, making it extremely difficult for intruders to pry open.
3panes.com Double Hung Windows feature Dual Recessed Tilt-Latches that provide clean sight lines and easy access to the sash tilting feature, enabling you to safely clean your windows from the inside of your home.
 3panes.com Double Hung Replacement Window's Dual Security Night Locks exceed the AAMA forced entry test in the venting position, enabling you to safely ventilate your home with peace of mind.
Picture at right illustrates the 3panes.com Double Hung Vinyl Replacement Window's unique "By-Pass" Meeting Rail, designed to provide an unobstructed view.
Also shown is the 3panes.com Double Hung Window's Full-Length Dual Wedge Interlock with Exclusive Power BarTM reinforcement, providing superior sturctural integrity and air tightness.
Double Finseal Woolpile Weather-Stripping is also at the window's meeting rail to provide a blanket of thermal protection.
 Triple Wall Vinyl Lift Rails
These full width lift rails assure effortless double hung window sash operation. Dow Blue* Foam also shown.
Sloped Weather-Inhibitor Sill
This internal water management system is two and one half times more resistant to water penetration than other frame designs, such as the Cut and Notch.
Double Foam-Tite® Seal on Sill
Creates a weather-inhibiting barrier.
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The 3panes.com Window Collection's Double Hung Vinyl Replacement Windows transform the extraordinary insulating power of uPVC vinyl construction into fusion-welded frames and sashes that provide strength, durability and years of performance. These durable double hung replacement window frames and sashes are then filled with Dow Blue* High R-Density Extruded Polystyrene Insulation at critical points to maximize your home's energy efficiency and comfort.
