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Industry Terms and Definitions

Below you can find a glossary of terms related to the lumber and timber industry to help you better understand SPTP’s products and services and how they can benefit your organization. 

Radius edge decking

A board of nominal 5/4 thickness with rounded edges the length of one surface; most frequently manufactured from southern pine or cedar, it is used primarily for construction of exterior decks on residential homes

Random length

A designation that indicates that lumber so labeled contains an assortment of widths and lengths; although all types of lumber may be packaged and sold in this manner, it is more common in the marketing of boards than in dimension or other lumber items; it is particularly common in the marketing of Idaho white pine, and shop of various species

Random width

1. Wood products of various widths 2. Veneer clipped in various non–standard widths, usually less than two feet wide 3. Shingles or shakes that are manufactured and sold in various widths within a certain length, thickness and grade 4. Lumber, usually for factory or industrial uses, that is sold in random widths


The regrowth of plants and trees in an area that has been logged or burned


1. To saw a piece of lumber along its horizontal axis 2. A band saw that performs such an operation

Rough lumber

Lumber which has not been dressed or surfaced but has been sawn, edged, and trimmed