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DELHI BACK DRAFT DAMPERS |
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| Model | Delhi Part Number | Width (inches) | Height (inches) |
| 407 | 9301008 | 6-3/4 | 8-1/8 |
| 409 | 9301009 | 9 | 10 |
| 410/610 | 9301010 | 9 | 11-1/8 |
| 412/612 | 9301011 | 9 | 13-1/4 |
| 415/615 | 9301012 | 12-1/4 | 16-3/4 |
| 418/618 | 9301013 | 13-3/4 | 18-5/8 |
| 420/620 | 9301014 | 15-1/2 | 24-1/2 |
| 422/622 | 9301015 | 16-7/8 | 27 |
| 425/625 | 9301016 | 19-3/8 | 31 |
| BI-10 | 9301026 | 7-7/8 | 11 |
| BI-12 | 9301017 | 9-1/2 | 12-3/4 |
| BI-13 | 9301018 | 10-3/8 | 14-1/8 |
| BI-15 | 9301019 | 11-5/8 | 15-1/2 |
| BI-16 | 9301020 | 12-3/4 | 17-3/8 |
| BI-18 | 9301021 | 14-1/8 | 19-1/8 |
| BI-20 | 9301022 | 15-3/8 | 21 |
| BI-22 | 9301023 | 17-1/4 | 23-3/8 |
| BI-24 | 9301024 | 19 | 25-5/8 |
| BI-27 | 9301025 | 20-7/8 | 28-1/4 |
| BI-30 | 9301027 | 23-1/4 | 31-1/4 |
| BI-33 | 9301026 | 25-5/8 | 34-5/8 |
| BI-36 | 9301029 | 28-3/8 | 38-1/4 |
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BACK DRAFT DAMPERS FOR SPUN ALUMINUM BLOWERS |
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| Model | Delhi Part Number | Models Used On (available in Canada only) | Dimension "A"(inches) | Dimension "B" (inches) |
| BD-12 | 9301001 | DR-8, DR-9 | 14 | 12 |
| BD-14 | 9301002 | DR-16 | 16-3/8 | 14-3/8 |
| BD-17 | 9301003 | BDCR-13,DR-25,33,50,75 | 18-7/8 | 16-7/8 |
| BD-22 | 9301004 | BDCR-15 | 23-7/8 | 21-7/8 |
| BD-24 | 9301005 | BDCR-18 | 25-7/8 | 23-7/8 |
| BD-29 | 9301007 | BDCR-24 | 30-7/8 | 28-7/8 |
| BD-36 | 9301006 | BDCR-30 | 37-7/8 | 35-7/8 |