Harrison Cameras

Kaiser "Promask" Professional Masking Frame - Up to 30 x 40cm

Kaiser "Promask" Professional Masking Frame - Up to 30 x 40cm - Main image
$729.99 $999.99 In stock

Category: Analogue Photography - Darkroom Equipment

Achieve precise, professional results with the Kaiser "Promask" Professional Masking Frame, designed for formats up to 30 × 40 cm (12 × 16 in.). Perfect for darkroom use, it features a margin stop with preclamping device, format markings, and sinkable grid pins for perfectly centred photo paper. Grid pins match standard hole intervals for easy alignment.

The frame is made of non-warping moulded aluminium and includes cm and inch scales. Its pneumatic spring with end position damping keeps the raised frame open for safe, convenient handling. Four sliding masking strips allow fast adjustment and fine-tuning via friction drive, each lockable and individually adjustable. Border widths are adjustable from 2 to 45 mm (0.08 to 1.8 in.).

Finished with a light grey base plate and non-slip rubber feet, this robust, accurate masking frame measures approximately 630 × 70 × 515 mm (24.8 × 2.8 × 18.4 in.), making it an essential tool for darkroom professionals and enthusiasts alike.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Evelyn K. ★★★★★

The adjustable margin stops are a lifesaver for getting consistently clean borders without sliding paper around. I made a dozen 20×30 prints in one session and every single one had perfectly straight edges.

Elizabeth W. ★★★★★

The metal edge stops are precise and the frame stays perfectly flat on the enlarger baseboard—makes clean borders so much easier. I’ve been able to print consistently sharp 30x40cm borders without any slippage.

Joshua ★★★★★

Switching from my old wooden frame, the metal blades on this one glide so smoothly that I can fine-tune borders without any frustrating slippage. The 30x40cm size handles my standard 8x10 paper with plenty of room left for generous margins, and the locking mechanism keeps everything dead square duri