United McGill Corporation was founded in 1951 as a local sheet metal contractor and steel fabricator. Today it is a national business specializing in engineering, manufacturing, and field installation of many construction products and industrial systems.

• See also:
• Masterformat 2004
• 07 91 23 - Backer Rods
• 07 91 26 - Joint Fillers
• 07 92 00 - Joint Sealants
• 08 34 00 - Special Function Doors
• 08 34 13 - Cold Storage Doors
• 08 34 16 - Hangar Doors
• 08 34 19 - Industrial Doors
• 08 34 33 - Lightproof Doors
• 08 34 46 - Radio-Frequency-Interference Shielding Doors
• 08 34 49 - Radiation Shielding Doors and Frames
• 08 34 73 - Sound Control Door Assemblies
• 08 51 69 - Metal Storm Windows
• 08 52 69 - Wood Storm Windows
• 08 53 69 - Vinyl Storm Windows
• 08 54 69 - Fiberglass Storm Windows
• 08 56 00 - Special Function Windows
• 08 56 19 - Pass Windows
• 08 56 46 - Radio-Frequency-Interference Shielding Windows
• 08 56 49 - Radiation Shielding Windows
• 08 56 56 - Security Window Screens
• 08 56 63 - Detention Windows
• 08 56 66 - Detention Window Screens
• 08 56 73 - Sound Control Windows
• 09 51 00 - Acoustical Ceilings
• 09 51 13 - Acoustical Panel Ceilings
• 09 51 23 - Acoustical Tile Ceilings
• 09 51 33 - Acoustical Metal Pan Ceilings
• 11 53 00 - Laboratory Equipment
• 13 20 00 - SPECIAL PURPOSE ROOMS
• 13 21 13 - Clean Rooms
• 13 21 16 - Hyperbaric Rooms
• 13 21 23 - Insulated Rooms
• 13 21 26 - Cold Storage Rooms
• 13 21 48 - Sound-Conditioned Rooms
• 13 22 00 - Office Shelters and Booths
• 13 23 00 - Planetariums
• 13 24 16 - Saunas
• 13 24 26 - Steam Baths
• 13 24 66 - Athletic Rooms
• 13 26 00 - Fabricated Rooms
• 13 27 00 - Vaults
• 13 31 00 - Fabric Structures
• 13 31 23 - Tensioned Fabric Structures
• 13 34 00 - Fabricated Engineered Structures
• 13 34 13 - Glazed Structures
• 13 34 16 - Grandstands and Bleachers
• 13 34 19 - Metal Building Systems
• 13 34 23 - Fabricated Structures
• 13 34 56 - Observatories
• 13 44 00 - Modular Mezzanines
• 21 05 48 - Vibration and Seismic Controls for Fire-Suppression Piping and Equipment
• 21 07 00 - Fire Suppression Systems Insulation
• 21 07 16 - Fire-Suppression Equipment Insulation
• 21 07 19 - Fire-Suppression Piping Insulation
• 22 05 48 - Vibration and Seismic Controls for Plumbing Piping and Equipment
• 22 07 00 - Plumbing Insulation
• 22 07 16 - Plumbing Equipment Insulation
• 22 07 19 - Plumbing Piping Insulation
• 23 05 48 - Vibration and Seismic Controls for HVAC Piping and Equipment
• 23 07 00 - HVAC Insulation
• 23 07 13 - Duct Insulation
• 23 07 16 - HVAC Equipment Insulation
• 23 07 19 - HVAC Piping Insulation
• 23 30 00 - HVAC AIR DISTRIBUTION
• 23 31 00 - HVAC Ducts and Casings
• 23 31 13 - Metal Ducts
• 23 31 16 - Nonmetal Ducts
• 23 33 00 - Air Duct Accessories
• 23 33 46 - Flexible Ducts
• 23 35 13 - Sawdust Collection Systems
• 23 37 00 - Air Outlets and Inlets
• 23 37 13 - Diffusers, Registers, and Grilles
• 23 37 23 - HVAC Gravity Ventilators
• 23 40 00 - HVAC AIR CLEANING DEVICES
• 23 41 00 - Particulate Air Filtration
• 23 41 33 - High-Efficiency Particulate Filtration
• 23 41 43 - Ultra-Low Penetration Filtration
• 23 43 00 - Electronic Air Cleaners
• 23 51 00 - Breechings, Chimneys, and Stacks
• 23 51 13 - Draft Control Devices
• 23 51 16 - Fabricated Breechings and Accessories
• 23 51 19 - Fabricated Stacks
• 23 51 23 - Gas Vents
• 23 51 33 - Insulated Sectional Chimneys
• 44 11 16 - Fugitive Dust Barrier Systems
• Masterformat 1995
• 07920 - Joint Sealants
• 08340 - Special Function Doors
• 08580 - Special Function Windows
• 09510 - Acoustical Ceilings
• 11600 - Laboratory Equipment
• 13030 - Special Purpose Rooms
• 13080 - Sound, Vibration, Seismic Control
• 13120 - Pre-Engineered Structures
• 15070 - Mechanical Sound, Vibration, and Seismic C
• 15080 - Mechanical Insulation
• 15550 - Breechings, Chimneys, and Stacks
• 15800 - Air Distribution
• 15810 - Ducts
• 15820 - Duct Accessories
• 15850 - Air Outlets and Inlets
• 15860 - Air Cleaning Devices