Tools & materials: photo credits

These stock photographs illustrate objects discussed in the field guide. They are not product tests or endorsements by the photographers or manufacturers.

• A room fan
  Photo by Dương Nhân on Pexels
• Exterior shutters
  Photo by Diana ✨ on Pexels
• Interior blinds
  Photo by Srattha Nualsate on Pexels

Used under the Pexels License. Selected 10 September 2026. Web copies are sized for display.