These F Type balances are general purpose balances for domestic and commercial applications with a sash weight range of 14.5kgs (32lbs) to 17.2kgs (38lbs). They are fitted with a black plastic end plug, which refers to their weight range of sash.
These balances are supplied pre-tensioned, reducing the need for adjustment on site. However, fine adjustment can be made “on site” if required using a screwdriver or Allen key.