A: Building Substructure
B: Building Structure & Shell
C: Building Interiors
D: Engineering Services
E: Specialties, Equipment & Furnishings
F: Special Construction
G: Earthwork & Site Development
Z: Common Components
04: Masonry and Stone
06: Wood, Plastics & Composites
07: Thermal & Moisture Protection
08: Openings - Doors & Windows
13: Special Construction
14: Conveying Systems
Site and Infrastructure
Additional Resources on 4specs
Specifiers Library - tips on specifying products
Changes in Companies - listing companies with name changes, purchases and companies out of business.
WebFormat - our recommendations on a building product website.
CSI Chapter Shows - opportunities for manufacturers to exhibit locally.
4specs Manufacturer Contact Search
Search by company name for contact information and website. Includes all the companies listed in 4specs and is updated early each month.
How to Contact 4specs
We appreciate all feedback and comments about the 4specs.com directory. Please email the publisher - Colin Gilboy - for feedback and comments, or tell us about a problem or a link that does not work properly.
Here is how to contact us. Please note that 4specs does not manufacture or sell any of the products listed here. You need to contact the manufacturer for additional information.
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Last Update: February 7, 2019