
Before you specify
Frequently Asked Questions
Is the 20434DS genuinely NSA approved?
Yes. 'Dahle 20434 DS' is named on the NSA/CSS Evaluated Products List for paper shredders under Dahle North America, Inc., and was still listed in the April 2026 quarterly update, with a throughput rating of Low. That listing is the requirement - NSA/CSS 02-01 asks for a maximum 1 mm x 5 mm particle and for the specific model to appear on the EPL. Its 1 x 4.7 mm cut meets the particle limit.
How portable is it really?
It weighs 66 lb complete and the case measures 16 x 14 x 18 inches. That is a genuine two-person lift or a one-person lift with a hand truck - it is transportable rather than luggable. The case is high-impact plastic with foam padding, designed to protect the cutting head in transit. It still needs 115 V mains power at the destination; there is no battery option.
Only four sheets a pass? Is that right?
Yes - four sheets of #20 bond, six of #16. That is the price of a 4.7 mm2 particle in a machine this size, and the NSA's own list rates its throughput Low. If you are destroying more than a modest daily volume you will find it slow. Plan around it: the 20434DS is for destroying sensitive material where you are, not for clearing archives.
Can it shred CDs, credit cards or stapled documents?
No. It is rated for paper only. The 1 x 4.7 mm cutting cylinders are precision-milled and metal or rigid plastic will damage them, which on a deployed machine means a mission-critical failure a long way from support. Remove staples, clips and fasteners before feeding, and destroy optical media and cards by another approved method.
What bags does the 6-gallon bin take?
Dahle's published shred-bag range starts at part 20723, which is rated for 8-10 gallon shredders, so the 20434DS's 6-gallon bin sits below the smallest catalogued size. We have not been able to verify a Dahle part number specified for this bin, so rather than guess: confirm the correct liner with Dahle or your dealer. In deployed use the bag is usually treated as classified waste and sealed before removal anyway.
Does it need oiling?
The 20434DS does not have the automatic EvenFlow Lubricator fitted to Dahle's cabinet models, so lubrication is a manual maintenance task. Follow the interval and method in the machine's own manual and use Dahle shredder oil (part 20721 or 20722) rather than any general-purpose lubricant. A P-7 cutting head runs hot and tight; skipping lubrication is the fastest way to shorten its life.