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Photo Mount Size Guide

Photo Mount Size Guide

When selecting a mount for your photographs or prints, it is important to understand two key measurements: the insert size and the outer mount size.

Mounts are typically named according to the photo size they hold, rather than their external dimensions.

1 Insert Size

The insert refers to the photograph or print that sits behind the mount aperture. The print should be slightly larger than the aperture opening so it remains securely positioned behind the mount.

Example: A mount designed for a 4×6" photograph will usually have an aperture slightly smaller than 4×6".

2 Mount (Outer) Dimensions

The outer dimensions describe the full size of the mount itself. These measurements are important when choosing suitable packaging or frames.

Packaging: Bags or envelopes should always be slightly larger than the mount's outer dimensions.
Framing: The frame opening should be large enough to accommodate the mount comfortably.
Mobile users: Swipe table left/right to see all columns →
Photo Size Mount Outer Size Clear Faced Bags Resealable Bags Self-Seal Poly Bags
2.5×3.5" (2-on) 195×225mm 5064BCLEAR 5087CLEAR RPB02
3×4 (4-on) 202×254mm 5065BCLEAR 5088CLEAR RPB02
3.5×5" (2-on) 214×145mm 5065BCLEAR 5088CLEAR RPB02
4×5" (2-on) 253×152mm 5065BCLEAR 5088CLEAR RPB02
4×6" 140×190mm 5063BCLEAR 5068CLEAR
  • RPB01
  • RPB06
5×7" 175×228mm 5064BCLEAR 5087CLEAR
  • RPB01
  • RPB04
  • RPB06
5×10" 175×304mm 5065BCLEAR 5090CLEAR RPB03
6×8" 205×251mm 5064BCLEAR 5087CLEAR
  • RPB02
  • RPB05
  • RPB06
6×9" 205×282mm 5065BCLEAR 5088CLEAR
  • RPB02
  • RPB05
6×12" 310×359mm 5066BCLEAR 5092CLEAR RPB03
7×10" 228×307mm 5065BCLEAR 5090CLEAR RPB03
8×10" 257×307mm 5065BCLEAR 5090CLEAR
  • RPB03
  • RPB05
  • RPB07
8×12" 257×360mm 5066BCLEAR 5092CLEAR
  • RPB03
  • RPB07
Note: Our sales team typically refers to the photo size when discussing mounts with customers.

Classic Mounts (Pack of 50)

SKU
STRUTM1BH

1240gsm black recycled strut mounts with a bold black foil border for a classic, traditional finish.

Designed for prints up to 8x12".
Portrait or landscape. 
Pack of 50

Grouped product items
Product Name Qty
4x6" (10x15cm) Black/Black Classic Mounts - 50 pack (5391H)
£17.37
5x7" (13x18cm) Black/Black Classic Mounts - 50 pack (5392H)
£22.37
6x8" (15x20cm) Black/Black Classic Mounts - 50 pack (5393H)
£23.87
6x9" (15x23cm) Black/Black Classic Mounts - 50 pack (5394H)
£24.44
8x10" (20x25cm) Black/Black Classic Mounts - 50 pack (5395H)
£29.02
8x12" (20x30cm) Black/Black Classic Mounts - 50 pack (5396H)
£43.24

Stimolantè’s Black Classic strut mounts offer a timeless, formal presentation for photographers who value traditional style. Made from 1240gsm black recycled board and finished with a bold black foil border around the aperture, these mounts frame your work with clean lines and confident contrast.

Trusted by professionals across schools, portrait studios, and events, the Classic Black style adds weight and presence to every print — ideal for clients who prefer a more substantial, elegant display.

Cut with precision and suitable for both portrait and landscape orientation, these mounts are designed for reliability and consistency across every batch.

Sizes listed refer to the photo insert size (the print that fits into the aperture). To view the full outer dimensions, please refer to our Size Chart.

This 50-pack is a practical option for smaller jobs, trial runs, or specialist sessions that require a traditional look and feel. Crafted from 100% recycled card and dyed black throughout, these strut mounts combine environmental responsibility with professional-grade performance, making them a preferred choice for UK photographers who care about both finish and sustainability.

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Photo Mount Size Guide

Photo Mount Size Guide

When selecting a mount for your photographs or prints, it is important to understand two key measurements: the insert size and the outer mount size.

Mounts are typically named according to the photo size they hold, rather than their external dimensions.

1 Insert Size

The insert refers to the photograph or print that sits behind the mount aperture. The print should be slightly larger than the aperture opening so it remains securely positioned behind the mount.

Example: A mount designed for a 4×6" photograph will usually have an aperture slightly smaller than 4×6".

2 Mount (Outer) Dimensions

The outer dimensions describe the full size of the mount itself. These measurements are important when choosing suitable packaging or frames.

Packaging: Bags or envelopes should always be slightly larger than the mount's outer dimensions.
Framing: The frame opening should be large enough to accommodate the mount comfortably.
Mobile users: Swipe table left/right to see all columns →
Photo Size Mount Outer Size Clear Faced Bags Resealable Bags Self-Seal Poly Bags
2.5×3.5" (2-on) 195×225mm 5064BCLEAR 5087CLEAR RPB02
3×4 (4-on) 202×254mm 5065BCLEAR 5088CLEAR RPB02
3.5×5" (2-on) 214×145mm 5065BCLEAR 5088CLEAR RPB02
4×5" (2-on) 253×152mm 5065BCLEAR 5088CLEAR RPB02
4×6" 140×190mm 5063BCLEAR 5068CLEAR
  • RPB01
  • RPB06
5×7" 175×228mm 5064BCLEAR 5087CLEAR
  • RPB01
  • RPB04
  • RPB06
5×10" 175×304mm 5065BCLEAR 5090CLEAR RPB03
6×8" 205×251mm 5064BCLEAR 5087CLEAR
  • RPB02
  • RPB05
  • RPB06
6×9" 205×282mm 5065BCLEAR 5088CLEAR
  • RPB02
  • RPB05
6×12" 310×359mm 5066BCLEAR 5092CLEAR RPB03
7×10" 228×307mm 5065BCLEAR 5090CLEAR RPB03
8×10" 257×307mm 5065BCLEAR 5090CLEAR
  • RPB03
  • RPB05
  • RPB07
8×12" 257×360mm 5066BCLEAR 5092CLEAR
  • RPB03
  • RPB07
Note: Our sales team typically refers to the photo size when discussing mounts with customers.
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