Window walls, alternatively, are mounted in between the concrete floor slabs. These panels which are typically pre-manufactured, are sealed with caulking and tape, and like curtain walls, they are non-load bearing.

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Window wall systems are commonly used in ribbon window configurations or punched openings.  The framing system spans from slab-to-slab and can be installed from the building’s interior to improve logistics and reduce installation costs.  Window wall systems can also employ floor slab edge covers that enable the system to mimic the look of a curtain wall system at a significantly reduced cost.