The standard module is 4 1/2″ wide, consisting of wood boards 3/4 thick by 3 3/4″ wide with a 3/4″ space between the boards. The black fiberfelt spacer is factory glued to the backside between the boards to enhance acoustical performance. A moisture resistant black hardboard ABS strip spacer is available for exterior applications. The Linear product can be provided in random lengths with tongue and groove ends or in fixed lengths.
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