- Unit has 1 1/2" 11.5 NPT fitting for attachment of extension column
- Attaches to a round square, rectangular ,or I-Beam truss up to 3" wide x 3 1/2" high
The ACC557 Truss Ceiling Adaptor, adapts ceiling mounts with 1 ½ 11.5 NPT fittings or extensions to square, round, rectangular or I-beam type trusses [up to 3” (76mm) in diameter] .
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