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Grommet Number	Description	Panel Cutout	Max Panel Thickness
142-17	Grommet, round, raised mount	2.75" dia.	0.17"
142-18	Grommet, round, recess mount	3.125" dia.	0.18"
142-181	Grommet, round, recess mount	3.125" dia.	0.18"
143-17	Grommet, round, flush mount, closed-back	3.125" dia.	0.18"
143-18	Grommet, round, flush mount	2.75" dia.	0.15"
144-18	Grommet, round, flush mount, closed-back	2.75" dia.	0.15"
146-18	Grommet, round, flush mount	2.25" dia.	0.25"
146-181	Grommet, round, raised mount	2.125" dia.	0.075"
146-182	Grommet, round, flush mount, closed-back	2.25" dia.	0.25"
146-184	Grommet, round, raised mount	2.25" dia.	0.25"
150-18	Grommet, rectangle, flush mount	2.88" x 1.53"	0.17"
150-181	Grommet, rectangle, flush mount	3.00" x 1.65"	0.25"
426-18	Grommet, round, flush mount	4.50" dia.	0.25"
421-18	Grommet, oval, flush mount	2.44" x 6.65"	0.25"
Dimensions given are for reference only. Due to various panel thickness, the size of the hole may need to be adjusted.

Lamp Series w/Flange	Max Panel Thickness	Mounting Hole Diameter
418 series (round)	Not applicable	4.50"
423 series (oval)	Not applicable	6.75" x 2.50"
424-09 (4" round)	Not applicable	4.50"

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