Size of the knockout holes?
Are the knockout holes compatible in diameter with the 20mm compression glands that you sell? i.e. these:
https://www.screwfix.com/p/tower-male-comp-gland-white-20mm-pack-of-2/45943
Asked by: foxbatuk
Hi foxbatuk,
Our warehouse staff have advised that the knockout holes are 20mm diameter and so will be compatible with the 20mm glands.
Thanks for using Screwfix Q&A. JT
Answered by: JTremain
Date published: 2019-12-02