The Festool RTS 400 REQ series delivers 250 watts of power in a 2.4-pound package — a combination that makes these rectangular pad sanders worth considering for finish work on vertical surfaces, window frames, and tight spaces where weight matters.
The narrow rectangular pad design gives you precision on edges and corners that random orbital sanders can’t match. The 80 x 133 mm pad size fits where bulkier sanders won’t, while the 1/16” (2 mm) sanding stroke produces the fine finish that trim work demands.
Power and Control Without the Weight
The RTS line represents a significant upgrade from older models. Festool increased power by 25% (250W vs 200W) compared to the previous RTS 400 EQ, but kept the weight at 2.4 lbs (1.1 kg) for the tool. That matters when you’re sanding overhead or working on vertical surfaces all day.
The MMC Electronics package includes soft-start function, variable speed 6,000–12,000 RPM, constant speed under load, and thermal/overload protection. Variable speed isn’t just a checkbox feature here — dropping down to 6,000 RPM prevents burning through veneer or blowing through edges on painted window frames. The constant speed under load keeps the finish consistent when you hit harder sections.
| Specification | Value |
|---|---|
| Power | 250 W |
| Weight | 2.4 lbs (1.1 kg) |
| Speed Range | 6,000–12,000 RPM |
| Sanding Stroke | 1/16” (2 mm) |
| Pad Size | 80 x 133 mm (3-5/32” x 5-1/4”) |
| Dust Port | 27 mm (1-1/16”) |
| Cord Length | 13.123 ft (4 m) Plug-it Power Cord |
| Voltage | 120 VAC |
Built for Fine Finish Work
The 1/16” stroke positions it specifically for fine-finish sanding — not aggressive material removal. This sander excels at sanding off paint and varnishes on window frames and sanding natural wood and veneer prior to varnishing. The short stroke prevents the swirl marks you’d get from a random orbital on delicate surfaces.
The rectangular pad shape serves a specific purpose. The narrow profile allows sanding on edges, corners, and frame members where delta sanders would struggle with their pointed tips and random orbitals would round over edges. You get into tight spaces without sacrificing control or finish quality.
Users emphasize low vibration and excellent dust collection in reviews, with a 5.0/5.0 average on Rockler based on 10 reviews. The Vibration-Stop balanced design reduces fatigue during extended use — critical when you’re working overhead or on ladder work.
The Complete System Approach
The kit includes the RTS 400 REQ Orbital Sander, StickFix Sanding Pad (80 x 133 mm), Festool Protector, Longlife Dust Bag, Plug-it Power Cord (13 ft), and Systainer³ (SYS3 M 187). The Protector edge guard prevents damage when sanding up to adjacent surfaces — a thoughtful detail that saves touch-up work.
The StickFix mechanical fastening design makes abrasive changes quick, and the system accepts Festool Granat, Rubin, and other 80x133mm abrasives. The integrated dust port works with Longlife Dust Bags or CT Extractors through the interlocking dust port compatible with latest generation CT connectors.
The 3-year warranty includes wear and tear coverage — not just defects. For a finish sander that sees daily use, that’s meaningful protection.
Who Should Buy the RTS 400 REQ
Worth it for finish carpenters and cabinet makers who spend significant time on vertical surfaces, window restoration, or detail sanding where precision matters more than speed. The lightweight design and rectangular pad excel at tasks where random orbitals are too aggressive and detail sanders are too small.
Skip it if you’re primarily sanding large flat surfaces or need aggressive material removal. A random orbital sander offers more versatility for general-purpose work. The RTS is a specialized tool for specialized work — and priced accordingly.
The RTS 400 REQ fills a specific niche: lightweight, controllable finish sanding in tight spaces. For contractors doing restoration work on Montana’s historic buildings or detail work on high-end trim packages, it’s a tool that earns its keep through precision and reduced fatigue.
Frequently Asked Questions
Q: How much does the Festool RTS 400 REQ weigh and why does that matter?
The Festool RTS 400 REQ weighs 2.4 lbs (1.1 kg), making it ideal for vertical surfaces and overhead work where heavier sanders cause fatigue. The lightweight design combined with 250W of power allows extended use on window frames, trim work, and other detail sanding without wearing out your arms.
Q: What’s the difference between the RTS 400 REQ and the older RTS 400 EQ model?
The Festool RTS 400 REQ delivers 250W of power compared to 200W in the older EQ model — a 25% increase. Despite the power boost, Festool kept the weight at 2.4 lbs and added features like improved ergonomics with rubberized grip surfaces and an interlocking dust port compatible with latest generation CT connectors.
Q: What size sanding pad does the RTS 400 REQ use and what abrasives are compatible?
The Festool RTS 400 REQ uses an 80 x 133 mm (3-5/32” x 5-1/4”) rectangular sanding pad with StickFix hook-and-loop attachment. It’s compatible with Festool Granat, Rubin, and other 80x133mm abrasives, with the StickFix mechanical fastening design allowing quick abrasive changes.
Q: What kind of warranty does Festool offer on the RTS 400 REQ?
Festool provides a 3-year limited warranty on the RTS 400 REQ that includes wear and tear coverage — not just manufacturing defects. This “Warranty All-Inclusive” coverage is particularly valuable for a finish sander that sees daily professional use.
Q: Is the RTS 400 REQ good for removing paint from window frames?
Yes, the Festool RTS 400 REQ is specifically designed for sanding off paint and varnishes on window frames. The rectangular pad shape allows precise edge work, the 1/16” (2 mm) fine sanding stroke prevents gouging, and the variable speed (6,000-12,000 RPM) lets you dial down the speed to avoid burning through layers.
Q: What comes in the box with the RTS 400 REQ?
The Festool RTS 400 REQ kit includes the orbital sander, an 80 x 133 mm StickFix sanding pad, a Festool Protector (edge guard), Longlife Dust Bag, 13-foot Plug-it Power Cord, and a Systainer³ (SYS3 M 187) storage case. The Protector prevents damage when sanding up to adjacent surfaces, while the dust bag or optional CT Extractor connection keeps your workspace clean.
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