I. Fast Mask

I. Fast Mask

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Flannery's Steel Fast Mask® is a taper's dream come true. While many drywall trims need to be masked before mud, tape, and paint can be applied, Fast Mask® requires no such step. Fast Mask® has a built in masking strip that only needs to be pulled once the drywall and paint job is complete. By cutting one of the most tedious steps out of the installation of drywall trim, Fast Mask® reduces the contractor's costs.

Our Steel Fast Mask® is a 1/2" L Metal that can be used around doors, windows, acoustic ceilings, concrete walls, and anywhere you wish to terminate drywall. The built in tear strip makes it a "self-masking" drywall trim, which allows the installer to skip the masking process. Install with nails, screws, construction staples, or adhesive.

Flannery was the first company to introduce this special Drywall L Metal to the construction industry. This product was invented over 30 years ago by Flannery's owner and founder and has become known by many in the industry as "Zipstrip" or "Drywall Zip Strip." Accept no imitations or substitutions, be sure to request Flannery's Fast Mask®.

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.


Patent # 4,4074,478




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.