This is an FK3d 3D printed item, using a fine ABS like resin and is for a set of 24 torpedo vents. You simply need to remove them from the base and they are ready to paint / fit.
OO GAUGE FK3d GRESLEY COACH RESTAURANT BUFFET CURTAINS 24 PAIRS - LNER 4mm Scale
OO GAUGE FK3d LMS / GWR ROOF SHELL VENTS (x24) - COACH 4mm Scale
OO GAUGE FK3d GWR COACH ROOF SHELL VENTS for BACHMANN REPLICA (x24) - 4mm Scale
HORNBY OO GAUGE R2779 LNER BLUE A4 Pacific 'Falcon' rn 4484 & 3TEAK LNER COACHES
Hornby OO Gauge R2059 LNER 4-6-2 ‘Mallard' Class A4 LNER Blue