Styrene (Perspex) is a nice plastic safety sheet with protective film on both sides. that may give appearance of scratches but one's protective film will be removed and you'll find clear like Glass.
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Picture Frame Resin Antique Photo Gallery Art Photo Frame Photo Display Holder for Bedroom Wall
Aliexpress UK
Black, White, Oak, Dark Oak, Walnut, Beech, Silver. The viewing window will be slightly smaller than the size given, approx 4mm of your picture will be covered on each side, this is to hold everything in place.
eBay
Retro Floral Photo Frame Elliptical Desktop Picture Frame Ornament Small Baroque Photo Holder Photo
Aliexpress UK
Standard and Custom mounts available. · The mount window inside is cut at a precise 45 degree angle. The mount outside is cut 45 degree angle but this wont be visible. · Standard mount aperture cut 5mm smaller than image size.
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A4 A3 Size 15pcs Photo Mats Rectangle Paper Mounts for 6/7/8/10/16 Inch Picture Frames Photo Decor
Aliexpress UK
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Transparent Acrylic Solid Wood Photo Frame Colorful LED Light Decorative Photo Frame For Photos,
Aliexpress UK
The black, pink and blue backing boards are also reversible so that you can have a white backing and a coloured front mount, making these even more versatile. No fiddly staples or tapes in sight, it really couldn’t be easier!
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Picture Photo Mounts Firm Decorative Frame Company Pack Adjustable Picture Mounts Frame Mount Photos
Aliexpress UK
We have found this to be the most popular range so we are sure to have the colour that you require.
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10pcs Photo Cardboard Picture Frame, DIY Paper Photo Frame With Wooden Clips, Wall Decoration,
Aliexpress UK
The viewing window will be slightly smaller than the size given, approx. 3-4mm of your picture will be covered on each side, this is to hold everything in place.
eBay
Acrylic Wooden Photo Frame Herbarium Display Frame Calendar DIY Frame Photo Frames for Wedding Party
Aliexpress UK
Ready to Hang/Stand Either Portrait or Landscape.
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Acrylic Wooden Photo Frame A4 10X15cm 15X20cm Frame Calendar Double-sided Frame Photo Frames For
Aliexpress UK