Original: Fitted with ‘smoke seals’ that are usually a thin metal and rubber strip fitted around the frame, they seal against the edge of the door.
Simplified: Fitted with ‘smoke seals’ that are usually a thin metal and rubber strip fitted around the frame, they seal against the edge of the door.
Simplified: Fitted with ‘smoke seals’ that are usually a thin metal and rubber strip fitted around the frame, that seal against the edge of the door.
Simplified: Fitted with ‘smoke seals’ that are usually a thin metal and rubber strip fitted around the frame, they fit against the edge of the door