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All Skylit Studio frame sizes refer to the inner opening where your print sits. A 30 × 40 cm frame fits a 30 × 40 cm Skylit Studio print – simple and true to size.
1. Our Standard Print & Frame Sizes
These are the core sizes we use across our Star Maps, Moon Maps and Space Prints. Each size below is listed in Height × Width (portrait orientation).
| Print / Frame Size | Height | Width |
|---|---|---|
| A4 | 29.7 cm | 21 cm |
| 30 × 40 cm | 40 cm | 30 cm |
| 40 × 50 cm | 50 cm | 40 cm |
| 50 × 70 cm | 70 cm | 50 cm |
| 60 × 80 cm | 80 cm | 60 cm |
2. How We Measure Standing & Wall Frames
Whether your frame stands on a shelf or hangs on the wall, we always measure from the inside edge of the frame – the area that actually holds your artwork.
- Ideal for A4 and smaller prints on desks, shelves or side tables.
- Size is taken from the inner opening, not the outer edge.
- Your print should match the listed size exactly.
- Used for our larger wall-mounted Star Maps and space prints.
- Measured exactly the same way as strut back frames.
- Again, the print size = the frame's inner opening.
Tip: if you're measuring a frame you already own, measure the visible window or backing board. This tells you which Skylit Studio print size to choose.
3. Moulding Profile & Real Measurements
Each Skylit Studio frame has a flat, smooth woodgrain profile with a generous front face. The diagram below shows the side view of the moulding:
- Moulding Depth: how far the frame projects from the wall.
- Rebate Depth: how deep the print and backing sit inside the frame.
- Rebate Width: the lip that overlaps the edge of the print.
- Moulding Width (Front): the visible face of the frame around your artwork.
| Frame Finish / Size | Moulding Depth | Rebate Depth | Face Width | Profile |
|---|---|---|---|---|
| Black, White, Light Oak (A4–50 × 70 cm) | 15 mm (1.5 cm) | 9 mm (0.9 cm) | 30 mm (3.0 cm) | Flat, woodgrain smooth |
| 60 × 80 cm only | 15 mm (1.5 cm) | 8 mm (0.8 cm) | 39 mm (3.9 cm) | Flat, woodgrain smooth |
Our larger 60 × 80 cm frames use a slightly wider face to give big Star Maps and space prints extra presence on the wall.
4. Estimate the Overall Frame Size
Use this quick calculator to estimate the outside dimensions of your frame. For most Skylit Studio frames (A4–50 × 70 cm), the face width B = 3.0 cm. For our 60 × 80 cm Classic Black frame, use 3.9 cm.
Formula: Outer height = inner height + (B × 2) | Outer width = inner width + (B × 2)
For precise planning, always allow a few millimetres tolerance.
5. Need Help Choosing a Size?
If you're planning a gallery wall, matching an existing frame, or just unsure which size will suit your space best, we're very happy to help.
Share a quick photo of your wall or your current frame and we can recommend the best size for your Skylit Studio star map or space print.
Contact us any time via our support page:
Contact Us

Our frames are proudly made in the UK by a local British company.
Framing Quality & Protection
Our frames are 15mm thick and crafted from durable wrapped MDF with a premium wood grain finish. Each frame comes with a lightweight Plexiglass front and a protective film to guard against scratches during shipping. We’ve chosen Plexiglass over glass to significantly reduce the risk of breakage during shipping.
When packaging your order, we take great care to ensure it arrives safely. Frames are securely wrapped in multiple layers of bubble wrap, reinforced with protective cardboard, and where possible fitted with corner protectors to minimise any risk of damage in transit.

Precision Framing, Proudly British Made
Our A4 frames come with a strut-style MDF back, making them easy to stand on a shelf or desk. They also include two wall brackets for hanging. Larger sizes are fitted with sturdy wall hanging attachments on the MDF backboard for secure and easy display.

The finishing touch
Looking to make your star map extra special? We also offer gift ribbon wrapping for a beautiful finishing touch—perfect for birthdays, anniversaries, or surprise moments. Simply select the option at checkout and we’ll wrap your frame with care, so it’s ready to gift straight out of the box.