  Trim rings are available in a variety of sizes and thickness. They are also available in many leg depths. Trim rings (or finish rings as they are sometimes referred to ) provide for a finished interior look. In the heavy duty line of windows, interior finish rings and/or aesthetics are usually not a high priority for large ocean going vessels. Therefore, the self-finishing, through bolted backing plate is sufficient for these applications. Upon request additional finish rings can be custom made for the heavy duty line of windows.
When ordering trim rings, the depth of the legs and wall thickness in critical to insure proper fitting and alignment. Spigot wall thickness commonly ranges from 1/16" to ¼", (1/8" standard). The legs usually range from 3/8" to 2", (1" standard). Unlike bolt or clamp-on windows, trim ring mounting holes are drilled off-point from the holes in the window frames, allowing the finishing screws to be driven from both sides of the cabin wall. These holes are commonly sized for #8 screws. If the requested application calls for through-bolt type windows, the holes are drilled on-point ( in-line) with the holes of the window frame.
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