Balco 
is the premier choice when your project requires quality trench and access cover systems. Our aluminum covers are economical, durable and provide an attractive appearance, along with features including easy access, lightweight removable covers, surface options and block-out or cast-in installation. Access covers are typically square and sold as units. Trench covers have linear profiles.
MM Systems Corporation
Access Covers - Durable and attractive covers that offer the maximum in performance and aesthetic flexibility. Removable covers allow access to in-floor electrical and refrigeration services. Optional trench liners provide an exit path for moisture. Cover options include plain, abrasive, diamond, recessed, and perforated plates.
NAAMM - Metal Bar Grating Division
Metal bar grating can be fabricated to suit any configuration for your specific application. Grating manufactured from carbon steel, aluminum, stainless steel, and special alloys provides safe, functional, durable products for all environments. Bar spacing and riveted centers variable and allow for products with open areas ranging from 50% to 90%.
SlipNOT® Metal Safety Flooring
SlipNOT® manufactures slip resistant durable gratings in a variety of styles, types of bar sizes/spacing, including ADA compliant. SlipNOT® grating is available in steel, stainless steel, aluminum and galvanized steel. SlipNOT® grating is custom fabricated to meet your specific application.
Syracuse Castings
Syracuse Castings designs and manufactures cast iron manhole covers, steel drainage grates and access hatches for the construction and utility industries. We offer a full line of H20 reticuline, parallel bar, curb type & ADA grating. Grates can be galvanized or painted steel or aluminum. AutoCAD drawings available on our website.
See also:
05 7700 - Wire Mesh & Expanded and Perforated Metal
06 5150 - Fiberglass (FRP) Gratings
12 4850 - Entrance Mats, Frames, Grilles and Gratings
33 4460 - Trench and Surface Drains
Alabama Metal Industries (AMICO)
Grating is manufactured in many forms. AMICO is the largest manufacturer of grating products in the world. Producing welded, press-locked, swage-locked bar grating, riveted, plank, safety and expanded metal grating. Produced in carbon steel, stainless steel, aluminum, and fiberglass, (FRP). Each type of grating allows its unique inherent qualities to benefit industrial and architectural application.
Balco
is the premier choice when your project requires quality trench and access cover systems. Our aluminum covers are economical, durable and provide an attractive appearance, along with features including easy access, lightweight removable covers, surface options and block-out or cast-in installation. Access covers are typically square and sold as units. Trench covers have linear profiles.
MM Systems Corporation
Access Covers - Durable and attractive covers that offer the maximum in performance and aesthetic flexibility. Removable covers allow access to in-floor electrical and refrigeration services. Optional trench liners provide an exit path for moisture. Cover options include plain, abrasive, diamond, recessed, and perforated plates.
SlipNOT® Metal Safety Flooring
SlipNOT® manufactures slip resistant durable gratings in a variety of styles, types of bar sizes/spacing, including ADA compliant. SlipNOT® grating is available in steel, stainless steel, aluminum and galvanized steel. SlipNOT® grating is custom fabricated to meet your specific application.
Syracuse Castings
Syracuse Castings designs and manufactures cast iron manhole covers, steel drainage grates and access hatches for the construction and utility industries. We offer a full line of H20 reticuline, parallel bar, curb type & ADA grating. Grates can be galvanized or painted steel or aluminum. AutoCAD drawings available on our website.
Related Associations and Reference Organizations
NAAMM - Metal Bar Grating Division
Metal bar grating can be fabricated to suit any configuration for your specific application. Grating manufactured from carbon steel, aluminum, stainless steel, and special alloys provides safe, functional, durable products for all environments. Bar spacing and riveted centers variable and allow for products with open areas ranging from 50% to 90%.