With reference to EX2 Finish Manual Sect 25 Page 75 (Photos 136 & 137) There appears to be a horizontal aluminium strip fixed to the header bottom (Photo 137) between the hinge attachments using a long drill, with holes drilled according to FN18. Upon examining FN18, this strip is not depicted, nor is the drill holes depicted, as expected.
My headers have a bottom cutout between the hinges and there is no strip between, nor is it referenced with a part number and it appears too short to connect the two hinges.
Is this strip intended to be fixed to the bottom of the header, or does it have an alternate use?
PS. Not to confuse the purpose of the smaller vertical door pillar strips.