The RETRO series can be adapted to many fixture types through RETRO series customizations so the LED engine fits correctly, performs well, and meets your venue’s installation and dimming requirements. Because every venue is different, we frequently build custom configurations around specific can sizes, socket types, and installation restrictions.
A venue with an E11 socket may need a different setup than one built around an E26 base, and some installations use bare-wire connections instead. Canto USA offers short, medium, and tall E11 and E26 versions so the RETRO can sit correctly inside fixtures with different depths.
How to prepare for a RETRO series customization
Providing a few pieces of information up front helps our Custom Department evaluate fit and create a demo sample quickly. Typical items to gather:
- Socket type (E11, E26, E39, BA15D, bare wire)
- Can/fixture internal depth (distance from socket to trim/reflector)
- Fixture diameter or PAR size (PAR 38, 46, 56, 64, etc.) if applicable
- Photos of the existing lamp installed in the fixture (interior and exterior)
- Desired color temperature (2700K, 3000K, 3500K, 4000K, 5000K) and dimming expectations
If you’re unsure where to begin with measurement or scope, our I Want to Retrofit My Theater—What Next? post outlines common retrofit planning steps and can help you collect the right information before contacting our team.

RETRO Series LED Retrofit Kits
View spec sheets and more for the RETRO series to compare mounting options, fixture compatibility, and product details.
Canto USA offers the RETRO-Fusion® 2.0 and the RETRO-Passive® 2.0, both designed for variable-wattage installations and compatibility with older SCR, TRIAC, and IGBT dimmer systems while remaining functional with newer dimming systems. Our RETRO retrofit kits are direct replacements for existing lamps and include standard and custom mounting options.
Adapters, reflectors, and color-temperature choices
Other installations may require a custom extension, an E39 screwbase adapter, a BA15D socket adapter, or a PAR ring sized for PAR 38, 46, 56, or 64 fixtures. Reflector choices can help when the lamp sits deeper inside the housing and when beam shaping is required. Color temperature is selectable separately with options at 2700K, 3000K, 3500K, 4000K, and 5000K to match the look and ambient requirements of the space.
Demo samples, modeling, and testing
If you know the dimensions of your existing fixtures but aren’t sure whether the RETRO series will fit, our custom department can build a sample for on-site or lab testing. Special Projects Coordinator Rance Brewster builds demo fixtures to the required specifications, assigns each one a serial number, and tests its light output for 24 hours before it leaves the shop.
Using 3D drafting, printing, and simulation tools, we can model a client’s space to help determine light output, optical layout, reflector placement, foot-candle levels, and overall power consumption before final installation. See real-world RETRO installs in our before-and-after gallery: Canto USA RETRO Installations: Before-and-After LED Retrofit Projects.
Custom projects are an important part of what we do at Canto USA. If your venue has an unusual fixture, installation challenge, or lighting requirement, contact our sales team, and we’ll help determine the right RETRO configuration for your space.



