Durable Doors. Nantucket Collection solid wood exterior doors are built to withstand whatever nature throws at them, says the manufacturer. They come in four species — Douglas fir, mahogany, black locust, and cypress — and feature mortise-and-tenon joinery with face-driven wood pins. Design options include five profiles and two thicknesses (13?4 inches or 21?4 inches); glazed units contain 3?4-inch insulated glass. Prices range from $650 for Douglas fir to $1,200 for mahogany. Simpson Door Co., 800/746-7766, simpsondoor.com
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