Frames & Jambs

What Is Steel Stiffener?

A steel reinforcement element added to a frame or structural assembly to improve rigidity.

A steel stiffener is a reinforcement component used to strengthen a frame and reduce flexing. The product data identifies wood-inserted steel stiffeners as part of a knock-down frame construction.

Buying Considerations

Verify the stiffener location and how it interacts with fasteners, wall framing, and installation hardware. Reinforcement should match the intended frame and wall construction.

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