Alder Superior 1 Face

S1F

S1F is a 83.3% Clear One Face cuttings grade.

S1F is a similar to the top-of-the-line SUP product on the grade face while allowing a sound back. It is best used in applications where the back is not seen.

Length Specs:

6′ (1.83m) minimum

Width Specs:

4″ (101.6mm) minimum
With up to 5% narrows

Cutting Specs:

3″ x 6′ (76mm x 1.83m), or 4″ x 3′ (101mm x 915mm)
Limit to the number of cuttings allowed

	8’1″	10’1″	12’1″
13/16	•	•	•
4/4	•	•
5/4	•	•
6/4	•	•
8/4	•	•

Notes:

S1F admits all boards two square feet and over surface measure, yielding no less than 83.3% Clear One Face cuttings.

WANE is limited to 8.3% of the surface measure of the board on the face.

The aggregate inches of PITH length will not exceed 2 times the surface feet of the board.

The aggregate inches of SPLIT length will not exceed 2 times the surface feet of the board. SPLITs diverging more than 1″ (25mm) per 12″ (305mm) in length, are not admitted, except when 12″ (305mm) or shorter and within one lineal foot from the end of the board, leaving at least 50% clear wood and not less than 25% sound wood in aggregate.

SIDE BEND is limited to 5/8″ (16mm). PIN KNOTs are not considered defect.