Boulder, CO · 2525 Arapahoe Ave
STORE HOURS:
Shop Products
- Gift Cards
- Apparel & Footwear
- Appliances
- Automotive
- Building Materials
- Cleaning
- Doors & Windows
- Electrical
- Hardware
- Fasteners
- Flooring
- Home Goods & Decor
- Heating, Cooling & Ventilation
- Holiday
- Lighting & Ceiling Fans
- Kitchen & Bath
- Lawn & Garden
- Paint
- Plumbing
- Outdoor Living
- Storage & Organization
- Pet & Wild Bird
- Sports & Recreation
- Tools
Services
Inspiration
About Us
Contact Us
Rewards
- Home
- Products
- Paint
- Abrasives
- Sandpaper Sheets
- 3M 99421NA
3M
3M Wetordry 99421NA Sandpaper, 11 in L, 9 in W, Extra Fine, 320 Grit, Silicon Carbide Abrasive, Paper Backing
MPN: 99421NA
•
SKU: 102206541
• UPC: 051144020041
Store SKU:
Supplier SKU:
Customer Part Number:
Promo Price:
Volume Discounts
How Would You Like to Get It?
Store Pickup / Curbside
Check in-store availability · Ready same day
FREE
Ship to Me
Standard shipping · 5–7 business days
FREE
Local Delivery
Same-day in Boulder · Order before 2pm
$9.99
Need Help Choosing?
Our Green Vest experts can walk you through options or recommend a local pro.
3M Wetordry 99421NA Sandpaper, 11 in L, 9 in W, Extra Fine, 320 Grit, Silicon Carbide Abrasive, Paper Backing
Primarily used in the metalworking and woodworking industries, the 3M™ Wetordry™ paper sheet, 413Q, is a silicon carbide, closed coat product bonded with a waterproof resin. It works well for sanding old finishes, fine featheredging, surface work and can be used wet or dry.
| Coat Type | Closed |
| Bond Type | Resin |
| Length | 11 in |
| Width | 9 in |
| Grit Size | 320 |
| Backing Material | Paper |
| Backing Weight | A |
| Grit Grade | Extra Fine |
| Abrasive Material | Silicon Carbide |
| Color | Black |
| Applicable Materials | Fiberglass, Plastic |
- Can be used wet or dry
- Bonded with a waterproof resin