What kind of air compressor do you recommend for this nailer?

It really depends on how you're using it. If you're intermittently nailing with in and not imitating a machine gun- you can use a pancake or similar small compressor. The working pressure of the nailer is 70-115 PSI. I run mine at 100 PSI. Any portable compressor should be able to hit that pressure. The real question is duty cycle. If you're nailing every few seconds then you'll need a compressor capable of keeping up with the volume of air being consumed OR you'll have to slow down until your compressor stops running before firing the next nail. I run mine on 2 different compressors and don't have any issues- one is a 40 gallon shop compressor- the CFM is infinite compared to the gun. The other compressor is 2.6 CFM. I don't rapid fire when I'm using it and I can fire several nails before the compressor has to cycle. As long as you're not continuing to fire when the compressor is running you should be OK.

How come just below the nailer specs they say "often bought with this product"....22 degree nails....not 21?

I used some of the 22 degree without a problem. I've used Bostich guns for 30 years prior to this gun & this is as good as any I've used.t's a great nailer

will it take any brand of nails?

I have used two different brands so far. As long as the nails are plastic coated, 21 degree I believe any brand would work. The best prices I have found on nails is at harbor freight. 2500 nails for around $28. I have used 2 1/2" and 3 1/2"

do the nails have to be plastic coated

Plastic coated? No. But I do believe they have to be Plastic Collated, that is, they need to be bound together with plastic. I'm not sure if paper collated nails will work.

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🔨 Nail your next project like a pro — precision, power, and comfort in one tool!

BUILT TO ENDURE - One-piece hardened steel drive blade engineered for long-lasting performance
JOBSITE FRIENDLY - No mar safety tip protects surfaces for flawless finishes every time
COMFORT IN EVERY NAIL - Ergonomic grip reduces fatigue during marathon work sessions
PRECISION MEETS POWER - Dual mode trigger for pinpoint accuracy or rapid-fire speed
EFFORTLESS CUSTOMIZATION - Tool-free depth adjustment wheel adapts instantly to any project

The NuMax SFR2190 Pneumatic 21 Degree 3-1/2" Framing Nailer is a robust, air-powered tool designed for framing, subfloors, roof decking, and more. Featuring a hardened steel drive blade, anti-dry-fire mechanism, dual mode trigger, and tool-free depth adjustment, it delivers professional-grade performance with enhanced user comfort and durability. Perfect for contractors and serious DIYers aiming to boost productivity and achieve flawless results.

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Manufacturer	NuMax
Part number	SFR2190
Item Weight	3.9 Kilograms
Product Dimensions	14 x 36 x 51 cm; 3.9 kg
Item model number	SFR2190
Size	21° Full Head Framing Nailer
Style	Tool Only
Material	Heat-treated steel drive blade
Pattern	Nailer
Power source type	Air-powered
Item Package Quantity	1
Measurement System	Imperial
Special Features	Adjustable
Included components	Pneumatic 21 Degree 3-1/2" Framing Nailer; Adjustment tools
Batteries Included?	No
Batteries Required?	No

NuMax SFR2190 Pneumatic 21 Degree 3-1/2" Framing Nailer

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