-Moulding and Millwork Jargon-

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Adhesive Performance Levels-
The Standard Specification for Adhesives Used in Nonstructural Glued lumber Products, designated D3110-72 by the American Society for Testing and Material (ASTM), establishes acceptable performance levels for glues or adhesives to be used in nonstructural glued lumber products.  Such products include, but are not limited to interior and exterior mouldings, window and door stock, add glued lumber panels.  In this specification adhesives are classified on the basis of two performance levels, wet-use and dry-use.
Wet-Use Adhesives-
A wet use nonstructural adhesive is defined as one capable of producing sufficient bond strength to make the glued lumber product serviceable under nonstructural use while exposed at an Equilibrium moisture Content (EMC) of 16% or greater and the temperature may reach as high as 165 degrees Fahrenheit (74 degrees Celsius) at times during service.
Dry-Use Adhesive-
A dry use nonstructural adhesive is defined as one capable of developing sufficient strength and durability to make the glued lumber product serviceable under ordinary conditions of nonstructural use, when the Equilibrium Moisture Content (EMC) does not exceed 16% and the temperature may reach 165 degrees Fahrenheit (74 degrees Celsius) for as long as 6 hours during shipment or no greater that 140 degree Fahrenheit (60 degrees Celsius) continuously during service.
Astragal-
This moulding includes two different types, a T-Astragal and a Flat Astragal.  The "T" is attached to one of a pair of doors to keep one door from swinging through the opening.  The flat astragal, which in classic Greek architecture was a bead around a column below the cap, is used for  decorative purposes.

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