1. Mini blinds; here the slats are pretty narrow and you can’t expect it to be wider than 19 mm.
2. Vertical blinds; slats are vertical here thus giving it the name. Additionally, you can find the slats made of stiffen fabric. It is possible to turn the slats by 90 degrees when they hang from their ends from a guide rail.
Slat type window blinds open by turning in place which is facilitated by turning rotator attachments connected to strings.
There are special types in window blinds, such as solid blinds referring to those which can be opened by pulling up or by pushing up only. These can’t be opened in place as they are made of one solid sheet material. Examples of these are here.
Holland Blinds: One most common Holland blind type is woven wood blind, woven by simple strings so that they can just roll up or fold up to open. These are preferred in tropical conditions because of their higher efficiency in Sun control. The natural appearance gives an exquisite feel and gels totally with the ambience.