Casements

3 clues
Windows.
Window frames
Hinged windows
Similar answers:
Abasements
Abatements
Abutments
Acase
Acaseforholding
Acaseofhives
Acaseofidentity
Accomplishments
Accoutrements
Accusativecase
Activecase
Adepartmentstoreandhe
Adjustincase
Adjustments
Adornments
Agreements
Ahamoments
Ailments
Aliments
Alimonypayments