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W&D Weekly
March 25, 2015
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The Latest
Sorting Through the Flange Confusion

The window and door industry has at least 10 terms to describe a grand total of two window frame appendages. Without faulting the industry, it’s fair to say we’ve stirred up some confusion. This affects understanding of product, installation technique, and selection of installation instruction documents. Read More

 
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Product Spotlight
Casement Hardware Program from NAP

Northern Architectural Products Inc., a division of The Accurate Group, developed a new casement hardware program to complement its selection of weather seal offerings. The company reports it achieved a new standard in weight load capabilities with new locking handle and strong 2-bar hinges that are the first in the market capable of carrying large weight loads. The hinges are certified for both casement and awning uses; a 10-inch hinge is capable of carrying up to 120 pounds awning and 130 pounds casement, and the 13-inch hinge is capable of loads up to 130 pounds awning and 150 pounds casement. NAP says the new casement hardware is also designed to prevent gear malfunctions, air and water leaks and is coated with Corro-Guard protection to provide a minimum 300 hours of salt testing. The locking handle features a modern design that is available in an array of industry standard colors as well as custom colors. Like all of NAP’s casement hinges, the new 2-bar hinge has been upgraded to endure the heavier loads associated with triple-pane units. NAP reports the operators have been tested to AAMA 901-10, in the NAP in-house test lab.

 
The Talk

By Jim Snyder

One window design trend in recent years is a movement toward a “narrow, flat, pre-punched appendage around the entire perimeter through which we drive nails to anchor the fenestration to the wall structure.” 

You may be wondering why I’m being so abstract in terming this component. I choose to because there is no one term and I want you to consider what you would naturally call it. May I add that I am not referring to that “narrow, sometimes wide, exterior-most, flat perimeter appendage that has more to do with exterior sealing and trim-out than with structural anchorage.”

I talk about both however, in this month’s From the Field column, because there is surprisingly frequent confusion in the differences. #applesandoranges

The industry as a whole has difficulty pinning down an all-inclusive term for this anchoring appendage. While participating in industry document creations and revisions, our task groups often pause on which term best captures this element. I think that’s maybe how “appendage” was introduced.

Although this component has been around, to my knowledge, since the introduction of aluminum residential windows in the 1930s, its use is growing as new generation extruded/pultruded frame materials and clad-wood products have been introduced in the past few decades. Even some all-wood products are starting to use this component in a revolutionary way.

This prompted my question in this week’s poll, because I’ve heard all of these terms used. Please take the poll, leave a comment or email me if I’ve missed one.

Weigh in on this week’s poll and post your thoughts on the subject.
What is your default terminology for this anchoring appendage?
Mounting flange
Mounting fin
Installation flange
Installation fin
Nail fin
Fin (window)
True flange
Non-frontal flange
 
 
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The Outside View
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From FMI Corporation
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