The BESELER 4x5 negative holder for 35mm mounted slides is specially designed for use with the 45 CB7 enlargers, making it an essential accessory for darkroom enthusiasts. This high-quality product from Beseler ensures precise and secure placement of your negative for optimal results. The durable construction guarantees long-lasting performance, while the compatibility with 35mm mounted slides makes it versatile for various film formats. Experience professional-grade printing with this essential darkroom equipment from Beseler, a trusted brand in the industry. Elevate your darkroom workflow with the BESELER 4x5 negative holder for 35M slides for 45 cb7.