Recessed board lpl 7541

I have this enlarger and I want to enlarge 135 film. It’s unable because I need a recessed board for my 50mm. Where can I found one?

thank you

Isn't that actually an LPL 7451?
Aren't the boards reversible?
From KHB's page for the 7451 found here: http://www.khbphotografix.com/LPL/LPL4x5.htm

MattKing said:

Isn't that actually an LPL 7451?
Aren't the boards reversible?
From KHB's page for the 7451 found here: http://www.khbphotografix.com/LPL/LPL4x5.htm
View attachment 386549

Click to expand...

Hello, sorry I mix numbers 7451.
I have a reversible lens board but it’s flat I need with a lot of height be quad otherwise my 50 mm doesn’t work. I’m in Europe, is there any seller in Europe?

Last lens board I bought from https://customphototools.com/lpl-enlarger-lensboards/

No problem with the switched around number.
Those flat lens boards appear to be non-standard for the LPL enlargers.
A peek at KHB's web store indicates that my 7700 enlarger and your 7451 enlarger use the same boards - here is that page:
http://store.khbphotografix.com/LPL-Lens-Mounts/
So you can expand any website searches to include the 7700 boards.
Here is an eBay listing from Germany that might help: https://www.cafr.ebay.ca/itm/167187...TlVeHfqqS+YeCKZcJ0ISotk7+b|tkp:Bk9SR7qIn-6DZQ
Is your 50mm lens one with a 39mm thread size?