They are not original HORNBY but a very close copy and are a push fit into the roof openings.
3 D printed REPLACEMENT Windows and Skylights for Hornby Goods Shed
Hornby Engine Shed , 3 D printed REPLACEMENT Windows
Hornby Water Tower , 3 D printed REPLACEMENT Windows
3 D printed REPLACEMENT Windows and Skylights for Hornby Booking Hall/ Office
Hornby Signal box R503 , 3 D printed REPLACEMENT Windows
Hornby Signal box R503 , 3 D printed REPLACEMENT Staircase
