Douglas Fir (softwood)
Birch (hardwood) are made from ¾” multi-layer exterior grade plywood. Birch plywood has 13 layers per ¾” thickness (sheet) and it is a hardwood which provides a much stronger less flex pad under heavy loads.
Birch pads are constructed exactly the same way as the douglas fir pads.
Birch Outrigger pads are 1/2 the cost of comparable plastic pads.
All birch outrigger pads have edges water sealed.