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The French patio door installed at my house was too small for the rough opening, so there is a gap between the concrete slab and threshold of about 1.5”. What is the

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Steves & Sons 72 in. x 80 in. Reliant Series White Primed Fiberglass Prehung Right-Hand Inswing Mini Blind Patio Door FGPMB_PR_72_4IRH - The Home Depot