Once the trusses are designed and approved your order is released to the shop for manufacturing. The trusses are batched together in logical groups to maximize productivity and help ensure consistent production. The first step in the manufacturing process is the picking of the lumber required for the trusses. Mainely Trusses purchases their lumber requirements from carefully selected mills. During the picking process we “re-grade” the lumber to ensure that it meets our structural and visual requirements required for our trusses. All lumber used in our trusses is a minimum of 2 x 4 #2 grade-stamped lumber, higher grades are used when required by the design.