Karl has represented many companies over the years and is currently a LEE Filters Master and Hahnemühle partner. Therefore the following discount codes are available.

For anything in the LEE Filters range use the code 10KHOLT for a 10% discount.

For Hahnemühle products use the code KARLHOLTBY15 for a 15% discount.

Click the logo links below to be taken to the respective websites. These codes are presently for UK customers only. If you have any questions or would like advice on papers or filters, please feel free to message via the contact box below.


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