3-1/2IN FR350B Nailer
- Nailer
- Pneumatic
- Blend
- No
A framing class pneumatic nailer for crews with an existing air supply, sized for structural nails rather than trim work.
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How it ranks among the 177 nailers we track
4.4★ across 159 Amazon ratings, Bayesian-smoothed toward the category average.
159 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 177 nailers we track - how the scorecard works · full nailers data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The FR350B is an air powered nailer, weighing 7.3 pounds with a body measuring 21 by 5 by 15 inches. Its 3-1/2 inch nail rating and dimensions point to a framing nailer built for structural work rather than trim or finish jobs.
As a pneumatic tool it needs a compressor and air hose rather than a battery, which keeps it lighter than most cordless framing nailers but ties it to a compressed air setup. Its listed 3-1/2 inch capacity and blend housing material match the size and build of a nailer meant for framing lumber, not light trim.
- Air powered operation
- Rated for 3-1/2 inch nails
- 7.3 pound body
- 21 x 5 x 15 inch dimensions
Who it's for
Framers and builders who already run a compressor on site and want a nailer sized for structural framing nails. Not a fit for finish carpenters who need a compact brad or finish nailer.
Strengths and trade-offs
Drawn from this product's published specifications.
- Air powered so no battery to charge
- Sized for 3-1/2 inch framing nails
- No battery weight added to the tool
- Requires a compressor and air hose on site
- Bulkier than finish or trim nailers
- Blend material construction is not detailed further
Performance notes
Air power delivers consistent driving force as long as the compressor keeps up, without the weight or charge time of a battery pack. At 21 by 5 by 15 inches and 7.3 pounds, it is sized more for two handed framing work than one handed finish nailing.
Specifications
| Brand | 3-1/2IN |
|---|---|
| Model | FR350B |
| Power Source | Pneumatic |
| Material | Blend |
| Battery | No |
| Item Weight | 7.3 pounds |
| Dimensions | 21 × 5 × 15 inches |
How it compares
This product against the closest alternatives we track in nailers.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| 3-1/2IN FR350B NailerThis product | 4.4 / 5 | 159 | 3.6 / 5 |
| DEWALT DWFP12231 NailerDeWalt | 4.7 / 5 | 5,003 | 4.4 / 5 |
| Metabo NT50AE2 NailerMetabo | 4.6 / 5 | 3,587 | 4.4 / 5 |
| BOSTITCH BTFP12233 NailerBOSTITCH | 4.8 / 5 | 2,616 | 4.4 / 5 |
| Bielmeier BCSG-4 NailerBielmeier | 4.3 / 5 | 3,991 | 4.3 / 5 |
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Questions about the 3-1/2IN FR350B
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the FR350B need a compressor?
Yes. It is air powered, so it needs a compressor and hose rather than a battery.
What size nails does the FR350B take?
Its name and specs point to a 3-1/2 inch nail capacity, consistent with framing work.
How much does the FR350B weigh?
7.3 pounds, with a body measuring 21 by 5 by 15 inches.