ST / STG materialDie cast zinc or aluminum
STG…M materialMalleable iron, zinc plated (HDG available)
Trade sizesST and STG 1/2"-4"; STG…M 1/2"-6"
GroundingSTG and STG…M include a grounding provision
Class IDivision 2
Class IIDivision 1 & 2
Class IIIDivision 1 & 2
Classifications shown for this model
Class 1 Division 2Class 2 Division 1Industrial
Catalogue numbers & dimensions
| CAT# | Trade Size | Dimensions (in) | |||
|---|---|---|---|---|---|
| Ferrous | Alum. | A | B | C | |
| ST15 | ST15A | 1/2" | 1.340 | 2.000 | 0.810 |
| ST20 | ST20A | 3/4" | 1.470 | 2.250 | 0.910 |
| ST25 | ST25A | 1" | 1.660 | 2.500 | 1.030 |
| ST32 | ST32A | 1-1/4" | 1.690 | 3.250 | 1.030 |
| ST40 | ST40A | 1-1/2" | 1.690 | 3.500 | 1.030 |
| ST50 | ST50A | 2" | 1.750 | 4.250 | 1.090 |
| ST65 | ST65A | 2-1/2" | 2.220 | 4.750 | 1.280 |
| ST80 | ST80A | 3" | 2.310 | 5.250 | 1.380 |
| ST90 | ST90A | 3-1/2" | 2.380 | 5.500 | 1.440 |
| ST100 | ST100A | 4" | 2.440 | 6.250 | 1.500 |
| CAT# | Trade Size | Dimensions (in) | |||
|---|---|---|---|---|---|
| Ferrous | Alum. | A | B | C | |
| STG15 | STG15A | 1/2" | 1.340 | 2.000 | 0.810 |
| STG20 | STG20A | 3/4" | 1.470 | 2.250 | 0.910 |
| STG25 | STG25A | 1" | 1.660 | 2.500 | 1.030 |
| STG32 | STG32A | 1-1/4" | 1.690 | 3.250 | 1.030 |
| STG40 | STG40A | 1-1/2" | 1.690 | 3.500 | 1.030 |
| STG50 | STG50A | 2" | 1.750 | 4.250 | 1.090 |
| STG65 | STG65A | 2-1/2" | 2.220 | 4.750 | 1.280 |
| STG80 | STG80A | 3" | 2.310 | 5.250 | 1.380 |
| STG90 | STG90A | 3-1/2" | 2.380 | 5.500 | 1.440 |
| STG100 | STG100A | 4" | 2.440 | 6.250 | 1.500 |
| CAT# | Trade Size | Dimensions (in) | ||
|---|---|---|---|---|
| A | B | C | ||
| STG15M | 1/2" | 0.813 | 0.625 | 1.500 |
| STG20M | 3/4" | 0.938 | 0.625 | 1.813 |
| STG25M | 1" | 1.063 | 0.750 | 2.063 |
| STG32M | 1-1/4" | 1.250 | 0.750 | 2.313 |
| STG40M | 1-1/2" | 1.250 | 0.813 | 3.125 |
| STG50M | 2" | 1.250 | 0.813 | 3.563 |
| STG65M | 2-1/2" | 1.625 | 1.188 | 4.125 |
| STG80M | 3" | 1.750 | 1.250 | 4.938 |
| STG90M | 3-1/2" | 1.813 | 1.313 | 5.750 |
| STG100M | 4" | 1.938 | 1.375 | 6.188 |
| STG125M | 5" | 2.063 | 1.438 | 7.438 |
| STG150M | 6" | 2.125 | 1.563 | 8.813 |
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Frequently Asked Questions
What engineers and distributors ask most often before specifying this fixture.
Explosion-proof lighting uses a certified enclosure or protection method to keep an ignition inside the equipment from reaching a surrounding explosive gas or vapour atmosphere. The term does not make a fixture suitable for every hazardous location. Under CEC Section 18, the exact product must match the documented Zone or Division, gas or dust group, surface-temperature limit, ambient range and wiring method.
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