my current hole through the bulkhead isnt big enough for everything to get through!

does anyone have a old gromit lying about with a reasonable ID that I could have for some pennies?

whats the min. size you need ?

im honestly not sure!

15-20mm i would have thought to ensure a tight fit.

not sure what I've got that size, I'll have a look later....

or CBS sell packs for a few £ linky

Iv got one you can have

for a 20mm hole with the gromit in gives you about 18mm clearance

actualy just measured about 16mm clearance

hi, you can get a little pack from your local halfords or a bigger box
some elecrtical ones can be had from B&Q or your local electrical wholesalers for pence might even give you a couple if your lucky
Ray

there are 4 in the post to you now

chears tilly

thank you very much tilly.