| Customization: | Available |
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| After-sales Service: | on Line Service |
| Warranty: | One Year |
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1. Adaptors fitted with twin butterfly dampers.
2. Ideal for use in all fixed/adjustable applications as the increased holding force maintains the louvers in the desired position even in strong air flow.
3. Snap-In feature holds the biscuit firmly - Less likelihood of dislodging when adjusting or cleaning.
| Size | With Damper | Without Damper | |
| Code | Code | ||
| 300×150 | 150 | MA15D15 | |
| 200 | MA15D20 | ||
| 370×185 | 200 | MA20D20 | |
| 250 | MA20D25 | ||
| 300 | MA20D30 | ||
| 230×230 | 150 | MA23D15 | |
| 200 | MA23D20 | ||
| 250 | MA23D25 | ||
| 530×295 | 250 | MA26D25 | |
| 300 | MA26D30 | MA2630 | |
| 350 | MA2635 | ||
| 400 | MA2640 | ||
| 300×300 | 200 | MA30D20 | |
| 250 | MA30D25 | ||
| 300 | MA30D30 | MA3030 | |
| 350×350 | 300 | MA35D30 | MA3530 |
| 350 | MA3535 | ||
| 370×370 | 300 | MA37D30 | MA3730 |
| 350 | MA3735 | ||
| 400 | MA3740 | ||
| 450×450 | 200 | MA45D20 | |
| 250 | MA45D25 | ||
| 300 | MA45D30 | ||
| ... | ... | ... | |
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