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3" thick, pre-insulated
R-7.5 seat board. Includes 3/4" exterior
plywood, 1" HD polystyrene insulator board and 1-1/4"
hardwood veneer interior |
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Solid wood mullions constructed
of Timberstrand;
25% stronger than wood — won’t twist or warp |
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Mullions anchored at head
and seat with 6" lag bolts |