Before you specify
Frequently Asked Questions
Is the Dahle 40334 NSA approved?
Yes, verifiably. 'Dahle 40334' is listed on the NSA/CSS Evaluated Products List for paper shredders under Dahle North America, Inc., with a throughput rating of Med, and remained listed in the April 2026 quarterly update. NSA/CSS 02-01 requires both a particle no larger than 1 mm x 5 mm and the specific model appearing on the EPL. The 40334's 1 x 4.7 mm cut satisfies the particle requirement, and the listing satisfies the rest.
Can it shred CDs, credit cards or stapled paper?
No. Dahle rates the 40334 for paper only. The cutting cylinders are milled to a 1 mm tolerance and metal staples, clips or rigid plastic will damage them - an expensive outcome given the one-year cylinder warranty on Dahle's high-security models. Strip staples and clips before feeding. Optical media and cards need a separate approved destruction method; Dahle's 747 CS is the EPL-listed device for optical media.
Five sheets a pass - how slow is that in practice?
Slow enough that it changes how you work. Five sheets of #20 bond (seven of #16) means a 100-page file takes around twenty passes. For a secure office destroying a folder or two a day that is fine; for a records purge it is not. The NSA's own list rates the 40334's throughput as Med. If your volume is higher, the 40434 at eight sheets or the 20394 at nine are the EPL-listed alternatives.
What shred bags fit the 23-gallon bin?
Dahle 20725, rated for 20-30 gallon shredders and supplied 100 to a box. They are not included with the machine. These are 1.5 mil gusseted plastic bags that open to the cabinet's shape. P-7 output is close to a powder, so a thin generic liner is a poor substitute - it splits and you end up vacuuming classified residue off the floor. In secure environments the bag is normally sealed before it leaves the room.
Will legal-size paper fit?
Not unfolded. The feed opening is 10.25 inches, which accepts letter-size sheets fed long-edge first but will not take 8.5 x 14 legal or 11 x 17 tabloid. Folding works but consumes capacity fast on a five-sheet machine. If legal paper is a routine part of your workload and you need P-7, the Dahle 20394 has a 16-inch throat.
How is it different from the 40330 in the same cabinet?
Same cabinet family, same 23-gallon bin, same 10.25-inch throat, same 94 lb - but a different cutting head. The 40330 is P-6 at roughly 8.8 mm2 and takes six sheets at 47 dB; the 40334 is P-7 at 4.7 mm2, takes five sheets at 50 dB, and is on the NSA EPL. The 40334 is also about an inch deeper. If you do not have a classified requirement, the 40330 is the better value.
What does the warranty cover?
Two years on the machine and one year on the cutting cylinders. Dahle reserves its lifetime cutting-cylinder warranty for P-3, P-4 and P-5 models; all of its P-6 and P-7 machines, this one included, carry one year. That is a real consideration on a high-security machine, because the cutting head is both the part that wears and the most expensive part to replace.