Skip to main content
Designers, Manufacturers, Installers of Lightning Protection Systems Since 1898
Home / Products / Air Terminals

Air Terminals

Air Terminals are used to intercept a lightning strike. They interface with lightning cables via Bases and Brackets and adapters. They are available in copper / coated copper, aluminum and stainless steel depending on the application. Air terminals are available in continuous lengths ranging from 12” to 144”. Length depends on the position of the mounting base and the required height above the protected structure. They are also available in pointed or blunt tip. All air terminals are UL96 listed and labelled.

Dom # 20UL-(Opt 1)-(Opt 2)-(Opt 3) 3/8” Diameter Air Terminal

Dom 20 Air Terminal - Tapered
Dom 20 Air Terminal - Blunt
Description 3/8” diameter solid air terminal
c/w 7/8” NPT thread
Application Interception of Lightning Strikes
For Use with Class I systems only
Dimensions 3/8” (9.5mm) Dia x Length (Opt 2)
Options Opt 1 - Material - Solid Copper (C) / Nickel/Chrome Plated Copper (CHR) / Tin Plated Copper (T)
Opt 2 – Length (12”-144”)
Opt 3 – Tip Style – Pointed (P) and Rounded Blunt (B)
Weight Copper / Coated Copper .75 oz/in (5.4 g/mm)

Dom # 30UL-(Opt 1)-(Opt 2)-(Opt 3) 1/2” Diameter Air Terminal

Dom 30 Air Terminal - Tapered
Dom 30 Air Terminal - Blunt
Description 1/2” diameter solid air terminal
c/w 7/8” NPT thread
Application Interception of Lightning Strikes
For Use with Class I and Class II systems
Dimensions 1/2” (12.5mm) Dia x Length (Opt 2)
Options Opt 1 - Material - Solid Copper (C) / Nickel/Chrome Plated Copper (CHR) / Tin Plated Copper (T) / Aluminum (A)
Opt 2 – Length (12”-144”)
Opt 3 – Tip Style – Pointed (P) and Rounded Blunt (B)
Weight Copper / Coated Copper 1 oz/in (7.2 g/mm)
Aluminum .3 oz/in (.34g/mm)

Dom # 40UL-(Opt 1)-(Opt 2)-(Opt 3) 5/8” Diameter Air Terminal

Dom 40 Air Terminal - Tapered
Dom 40 Air Terminal - Blunt
Description 5/8” diameter solid air terminal
c/w 7/8” NPT thread
Application Interception of Lightning Strikes
Exceeds requirements for Class I and Class II systems
Dimensions 5/8” (15.85mm) Dia x Length (Opt 2)
Options Opt 1 - Material - Solid Copper (C) / Nickel/Chrome Plated Copper (CHR) / Tin Plated Copper (T) / Aluminum (A)
Opt 2 – Length (12”-144”)
Opt 3 – Tip Style – Pointed (P) and Rounded Blunt (B)
Weight Copper / Coated Copper 1.33 oz/in (9.28 g/mm)
Aluminum .47oz/in (.53 g/mm)

Dom # 300SSUL-(Opt 1)-(Opt 2)-(Opt 3)-(Opt 4) 316 Stainless Steel Air Terminals

Dom 300 Air Terminal
Dom 300 Air Terminal - Blunt
Description Solid Type 316 Stainless Steel Air Terminal
Application Interception of Lightning Strikes for high temperature and High SO2 enviroments such as coal burning stacks.
Class III applications.
Dimensions Opt1 Dia x Opt2 Length
Options Opt 1 - Diameter – (5/8) (¾)
Opt 2 – Length (12”-144”) (1 ft intervals)
Opt 3 – Tip Style – Pointed (P) and Rounded Blunt (B)
Opt 4 – Thread – (leave blank for no thread)
(7/8”) (1-1/2”)
Weight 5/8“ Dia - 1.42 oz/in (1.59g/mm)
3/4“ Dia - 2.05 oz/in (2.28 g/mm)