Engineering & Specification Hub

Selection & design guides

Guidance for selecting the right perforated metal, expanded metal, or bar grating product for your project.

Guide

How to choose perforated metal

Hole shapes, open area calculations, and sheet gauges

Guide

How to choose expanded metal

Standard vs flattened, strand sizing, and structural loads

Guide

How to choose bar grating

Welded, press-locked, and span capacity load ratings

Guide

Perforated vs expanded metal

Side-by-side engineering comparison for screening and vents

Technical Resources

Product selection guides & comparisons

Evaluate materials, opening profiles, and manufacturing methods to specify the correct metal product for your project.