That old design is outdated.
Ventilation in the hives is improved dramatically by cutting a large hole in the inner cover and covering with hardware cloth. We only leave enough border to glue and staple the hardware cloth to. This treatment allows you to open hives and check them without smoke and it virtually eliminates condensation in winter (even with a layer of insulation loosly over it in winter up here in Wisconsin) and there will be little bearding in summer.
You don't need the hole to feed if you use Mountaincamps over the frames feeding technique.
Buy locally, buy only humanely raised animals, eat in season, keep bees!