What size lens for F-7 Classification lights?

I am in the process of disfiguring…er, adding lighted numberboards and classification lights to an Athearn BB F-7. I’ve been trying to figure out what to use for the classification lights. I’ve considered fiberoptics, acrylic rod, casting something myself, and then I checked the Walther’s site and they have classification light lenses in 2 sizes 4 1/2 " or 7"…the trouble is I don’t have a 1:1 F-7 to confirm the correct size…anybody got one handy?

Thanks for any and all guidance.

I’ve got an F9, does that help?

The Detail Associates 229-1708 4.5" lenses are appropriate for F units.

She’s a beauty! Can I get aride?[swg]

Thanks, that’s just what I needed to know![bow]

She needs new brake shoes right now, so she can only motivate around the yard legally, but she’s fun for switching!

Philip,

Do you have the BL2 to go with that one?

No, I wish!

We do have two F9A’s,

http://i83.photobucket.com/albums/j319/pcarrell/Prototype%20Train%20Photos/aan.jpg

http://i83.photobucket.com/albums/j319/pcarrell/Prototype%20Train%20Photos/abs.jpg

2 B units,

http://i83.photobucket.com/albums/j319/pcarrell/Prototype%20Train%20Photos/abr.jpg

a VO1000,

http://i83.photobucket.com/albums/j319/pcarrell/Prototype%20Train%20Photos/VO%201000/aep.jpg

a GP7 & a GP9,

http://i83.photobucket.com/albums/j319/pcarrell/Prototype%20Train%20Photos/Captured2007-7-2100010.jpg

http://i83.photobucket.com/albums/j319/pcarrell/Prototype%20Train%20Photos/Captured2006-8-1200018.jpg

a 44 tonner,

http://i83.photobucket.com/albums/j319/pcarrell/Prototype%20Train%20Photos/aea.jpg

a couple of other old switchers,

http://i83.photobucket.com/albums/j319/pcarrell/Prototype%20Train%20Photos/aam.jpg

http://i83.photobucket.com/albums/j319/pcarrell/Prototype%20Train%20Photos/