What are the benefits of your sliding patio doors?

Wide stiles and rails are designed with thick walls and multi-chambers that add strength and increase thermal performance. For maximum efficiency we include full perimeter, high performance weatherstripping and  custom-fit interlock system to provide extra protection against air infiltration for enhanced energy performance. Our doors glide on over-sized tandem steel rollers and provide smooth and effortless operation. A heavy duty vinyl sill with a stainless steel roller guide delivers superior strength, resists frost and condensation. Our heavy-duty locking system is standard or for optimum security choose our optional dual point lock and/or our optional footbolt lock which has a vent latch position.  As with all Great Lakes Window products it includes the Lifetime Limited Transferable warranty. Several standard sizes are available as well as custom sizes.


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