Wilson 1/4" Drain Rock
Wilson Quarry 1/4" Drain Rock is a clean, 100% crushed granite ideal for use as trench backfill or drainage filter aggregate. This product is produced daily and always available for shipment. Aggregate color is typically gray but at times shifts to brown.
Sieve Analysis
| Inches | MM/UM | Grading* |
|---|---|---|
| 3/8" | 9.5 mm | 100 |
| 1/4" | 6.3 mm | 98 |
| #4 | 4.75 mm | 52 |
| #8 | 2.36 mm | 13 |
| #16 | 1.18 mm | 9 |
| #30 | 600 um | 7 |
*Grading results are typical
Branch Availability
-
- A.R. Wilson Quarry
- 1900 Quarry Road
- Aromas, CA 95004
- 831.768.2380
Wilson 1/4" Drain Rock
