3" x 4" Storm Air Sanders

$289.99 USD - $299.99 USD
Shipping calculated at checkout.
SKU: SPS3X4
Model: Non Vacuum
$289.99 USD
$289.99 USD
NOT A SANDING SYSTEM. DOES NOT INCLUDE ABRASIVES.

You will need a VERY LARGE air compressor to run this sander. See video below before purchasing an air sander.

SurfPrep 3” X 4” 10,000 RPM Orbital Sander (Hook & Loop Backup Pad)

SurfPrep’s 3” x 4” Storm Air Sanders have a low profile, compact footprint designed for use on flat surfaces, recessed corners, inside drawer boxes, & profiled moldings, etc. The durable, lightweight nylon composite bodied sanders withstand rugged industrial applications and are excellent for both prep & finish sanding. Both the Air and Electric Ray can be converted into a more “aggressive leveling sander” with the simple addition of a pad saver with SurfPrep Film cut sheets. All OEM parts are available.

3" X 4" Storm Specifications

  • Air - 16 SCFM / 3.1 CFM / 90 PSI
  • RPM - Suggested Speed 10,000 RPM
  • Orbit - 3mm perfect orbit
  • Weight - 2 Pounds
  • Height - 3.3" High
  • Length - 5.5" Long
  • Material - Composite body, Steel Motor
  • Size - 3" X 4" Footprint
  • Power - .24 Horsepower / 179 Watts

*1 Year Manufacturer Warranty*

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1 Year Manufacturer's Warranty Information

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3"X4" Storm Manual

SurfPrep 3"x4" Storm Air Sanders | Compact Orbital Air Powered Sander 

The SurfPrep 3"x4" Storm air sander is a low-profile, lightweight pneumatic orbital sander built for flat surfaces, recessed corners, drawer boxes, and profiled mouldings. Nylon composite body, steel motor, Hook and Loop backup pad. Available in Non Vacuum ($289.99) and Vacuum Compatible ($299.99). Ships to all 50 U.S. states and Canada. 

Note: This is not a sanding system and does not include abrasives. A very large air compressor is required. See the air compressor requirement section below before purchasing. 

1. What Is the SurfPrep 3"x4" Storm Air Sander? 

The SurfPrep 3"x4" Storm is a pneumatic air powered sander with a low-profile, compact footprint designed for flat surfaces, corners, and spaces where larger sanders cannot operate cleanly. At 2 lbs and 3.3" high, it suits extended use in professional cabinet shops and woodworking environments. 

Key Features 

  • Low-profile compact footprint: 3"x4", 3.3" high, 5.5" long 
  • Durable nylon composite body and steel motor for industrial applications 
  • 10,000 RPM, 3mm orbit for consistent surface contact and scratch pattern 
  • Hook and Loop backup pad for fast abrasive changes 
  • Convertible to an aggressive leveling sander with a pad saver and SurfPrep Film cut sheets 
  • All OEM parts available 
  • 1-year manufacturer's warranty 
  • Two variants: Non Vacuum and Vacuum Compatible 

Shop the SurfPrep 3x4 Storm Air Sander → 

2. Key Specifications

SKU SPS3X4
Air Requirement 16 SCFM / 3.1 CFM @ 90 PSI
Speed 10,000 RPM (suggested)
Orbit 3mm
Weight 2 lbs
Height 3.3"
Length 5.5"
Footprint 3" x 4"
Body Nylon composite / Steel motor
Power 0.24 HP / 179 Watts
Backup Pad Hook and Loop
Warranty 1-Year Manufacturer Warranty

3. What the Storm Air Sander Is Built For 

  • Flat surfaces: consistent, even sanding across cabinet door faces and flat panels 
  • Recessed corners and inside drawer boxes where larger orbital sanders cannot operate without losing contact 
  • Profiled mouldings and detailed joinery — the compact footprint follows the surface 
  • Prep and finish sanding across the full sanding sequence 
  • Leveling sander: add a pad saver with SurfPrep Film cut sheets to convert for more aggressive stock removal 

4. Air Compressor Requirement 

This air sander requires a very large air compressor. The 3"x4" Storm needs 16 SCFM at 3.1 CFM and 90 PSI sustained under load. A small or portable compressor will not work. Verify your compressor output before purchase and watch the product video on the product page. 

5. Shipping Information 

Used by cabinet shops, furniture makers, and finishing professionals across the U.S., Canada, and the UK. SurfPrep ships to all 50 U.S. states and Canada. 

  • Free shipping on orders over $150 
  • Shipping costs calculated at checkout for all other orders 
  • Orders processed within 1-3 business days 
  • Shipped via UPS, USPS, or FedEx 

Read our full shipping policy. 

SurfPrep 3x4 Storm Air Sander. Built for Professional Finishing → 

6. Frequently Asked Questions 

What is the SurfPrep 3x4 Storm air sander used for? 

The SurfPrep 3"x4" Storm air sander is used for flat surface sanding, recessed corners, inside drawer boxes, profiled mouldings, and both prep and finish sanding. The compact 3"x4" footprint reaches areas where larger round sanders lose contact or cannot operate cleanly. 

What size air compressor do I need? 

The 3"x4" Storm air powered sander requires 16 SCFM at 3.1 CFM and 90 PSI. You will need a very large air compressor. A small or portable compressor will not deliver the sustained output this sander requires for continuous professional use. 

Does the Storm air sander include abrasives? 

No. The SurfPrep 3"x4" Storm air sander does not include abrasives and is not a sanding system. SurfPrep ProFoam abrasive pads and Film cut sheets are compatible with the Hook and Loop backup pad. 

What is the difference between Non Vacuum and Vacuum Compatible? 

The Non Vacuum variant ($289.99) operates without dust extraction connection. The Vacuum Compatible variant ($299.99) includes the necessary port to connect the orbital sander directly to a dust extraction system for dust-free sanding. 

Can the Storm air sander be used as a leveling sander? 

Yes. Adding a pad saver with SurfPrep Film cut sheets converts the 3"x4" Storm air sander into a more aggressive leveling sander for faster stock removal and surface leveling applications.