1.0mm 1.2mm Steel Gang Box Extension Ring With Adjustable Ear 20mm 25mm Knockouts

General:

1.00mm,1.20mm Thickness gi gang box extension ring 

1) 3"*3" electrical gi gang box extension ring made from high quality drawing steel coil

2) As the add-hight of the 3*3* electrical gang box

3) You may used indoor or outdoors

4) For BS4662 standard countries

5) Galvanized thickness is 15 micrometer

6) 3" *6" extension ring with one or two adjustable ear

7) Products size can stamp directly of the customer's brand

8) Thickness: 0.60mm ,0.80mm,0.90mm,1.0mm,1.10mm,1.2mm

9)Knockout Distribuition: all 20mm,all 25mm or mixed

10) Hight Available: 16mm,25mm,35mm,   3"*6" gang box extension ring also available 

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