3-Way Locking Corner Caps
Flannery has been manufacturing Corner Caps for over 20 years and we have developed the 3-Way Locking Corner Cap (Patent #5,647,182) to be the last Corner Cap that you will ever want to use. This Bullnose Corner Cap allows three lines of bullnose to meet each other at one point.
Why is our 3-Way Corner Cap better than any other Cap?
It is better because of the ease in which it can be installed. No staple, no nail, and no adhesive is required when installing our patented Self-Locking Corner Cap. Flannery's Bullnose 3-Way Locking Corner Cap has six prongs (2 at each joint) that can be tapped into the drywall, thus holding it in place until your bullnose corners are installed over it.
Another reason to utilize our Corner Cap is that it is a steel product, which requires less mud during the taping process than ordinary vinyl corner caps. Vinyl corner caps are twice as thick as our metal corner cap and require 50% more taping compound to finish. The special beveled crown of our cap matches perfectly to most bullnose corners. Why waste money on attaching and taping your next corner cap, when you can use Flannery's 3-Way Locking Corner Cap?
All Flannery steel and vinyl trims are manufactured according to standard specifications for accessories of gypsum wallboard and gypsum veneer base. ASTM designation C 1047-85.
For a MSDS report, click "More Information (PDF)" above.
PATENT #5,647,182
Installation Details

This website presents general guidelines and suggestions for the installation of Flannery trims and products. The purpose of these general guidelines and suggestions is to aid in a successful drywall or stucco finish based on the Uniform Building Code and industry standards. No website or catalog can address all of the unique specifics or installation details that occur from one project to another. Flannery recommends that every installer be familiar, or become acquainted with, common drywall and stucco trim installation practices before installing any of Flannery's many trims and products. Flannery also recommends that the specifying architect, engineer, and general contractor be consulted with as well. This website replaces and renders obsolete all previous publications by Flannery; including catalogs, pamphlets, or other forms of literature.
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