CRL 48" Phenolic Straight Edge Metal Cleaners & Polishes test both sides of the

test both sides of the window to double check

Low-e surfaces

it is also excellent as a lubricant for rubber gasket and glass installation

the second for identifying Low-E coated surfaces of the glass

Ideal for Cold Weather Use or with High Viscosity Sealants

CRL 48" Phenolic Straight Edge Metal Cleaners & Polishes test both sides of theMade of Strong, Tough, Durable Phenolic Resin Available in Several Lengths Phenolic Straight Edges Won't Warp Like Wood, and are Built to Last The CRL 96" Phenolic Straight Edge is built to last. It is constructed from the finest synthetic resin available. This makes it resist bending and it won't absorb any liquids such as cutting oil. It has no markings, but is accurate and easy to use. Used by leading glass companies, straight edges is a valuable