77GH13D D-size metal gobo holder for Patt. 23, Minim 23
A Rosco D-size metal gobo holder made for Strand Patt. 23 and Minim 23 profiles. It holds a D-size metal (steel) gobo and slides into the fixture’s gobo gate so the pattern sits at the focal plane and projects sharply.
Image: Rosco
Holds the pattern exactly where the lens needs it
A profile spot projects whatever sits in its gate. The holder keeps the gobo flat, centred and at the focal plane, so the image focuses cleanly — and lets you change patterns without handling the gobo inside a hot fixture.
- Holds one D-size metal (steel) gobo flat and centred in the gate
- Made to fit Patt. 23, Minim 23
- Positions the pattern at the focal plane for a sharp image
- Lets you swap gobos quickly between scenes or shows
Pattern projection on stage, set and site
Theatre & dance
Breakups, windows, foliage and texture from Patt. 23, Minim 23 rigs — load a gobo, focus, done.
Events & corporate
Logo, monogram and pattern projection on walls, floors and stage sets.
Film, TV & photography
Hard-edged shadow patterns such as blinds, windows and leaves on set or in the studio.
What it is — and what it isn’t
Use it for
- Loading a D-size metal (steel) gobo into Patt. 23, Minim 23
- Keeping spare holders pre-loaded for quick pattern changes
- Theatre, events, film and architectural projection
- Standard and custom Rosco steel gobos in this size
Don’t use it for
- Glass gobos — use a dedicated glass holder for your fixture
- Gobos that aren’t D-size — other sizes won’t seat correctly
- Fixtures not listed — gate designs differ between makers and models
- Moving-light gobo wheels — those use their own fixture-specific gobos
Loading the holder
- Switch off the fixture and let it cool — the gate area runs hot.
- Place the D-size steel gobo in the holder so it sits flat and centred, then close or clip the holder.
- Slide the holder fully into the gobo slot/gate on the fixture.
- Switch on and focus the fixture until the pattern edge is sharp.
- Text or logos read wrong? The lens inverts the image — flip or rotate the gobo in the holder and re-check.
Key details
| Brand | Rosco |
|---|---|
| Part number | 77GH13D |
| Holder size | D-size — for 53.3 mm outside-diameter gobos |
| Standard D gobo size | 53.3 mm outside diameter, approx. 40 mm maximum image area |
| Holder type | Metal — for metal (steel) gobos |
| Fits | Strand Patt. 23 and Minim 23 profiles |
| Supplied | Holder only — gobo sold separately |
Common questions
Why is 77GH13D a D-size holder?
The Strand Patt. 23 and Minim 23 are compact profiles with a small gate, so Rosco’s chart lists a D-size metal holder for them. D-size gobos are approx. 53.3 mm outside diameter with about a 40 mm image area.
What does a gobo holder do?
It holds the gobo (a patterned steel or glass disc) and slides into the gobo gate of a profile/ellipsoidal spot so the pattern sits at the focal point of the lens. Focusing the fixture then gives a sharp projected image.
What’s the difference between a metal and a glass gobo holder?
Metal holders are made for thin steel gobos. Glass gobos are thicker and fragile, so they need a glass holder built to retain them safely. Pick the holder to match both your fixture and your gobo type.
What size gobo does this holder take?
D-size. Standard D-size gobos are approx. 53.3 mm outside diameter with an approximate 40 mm maximum image area. Your design must sit inside the image area to project fully.
Is a gobo included?
No — this is the holder only. Choose a Rosco standard gobo in the matching size and type, or order a custom gobo through CFATS.
Holder-to-fixture compatibility is taken from Rosco’s gobo holder chart. Gate designs can change between fixture generations, so check your fixture model and gobo size before ordering, and test-fit before the show. Sizes and compatibility on this page are a guide only.
Not sure which holder fits?
Send us your fixture make and model and we’ll confirm the right Rosco holder and gobo size before you order.
