Before you specify
Frequently Asked Questions
Is the Dahle 40434 on the NSA list?
Yes. 'Dahle 40434' is named on the NSA/CSS Evaluated Products List for paper shredders under Dahle North America, Inc., with a throughput rating of High, and it remained listed in the April 2026 quarterly update. NSA/CSS 02-01 requires both a maximum 1 mm x 5 mm particle and the specific model being on the EPL. The 40434 meets both tests - its 1 x 4.7 mm cut is inside the particle limit and the model is listed by name.
What does the 'High' throughput rating on the EPL mean?
The NSA list carries a throughput indicator alongside each approved model. Among Dahle's listed shredders the 20434DS is rated Low, the 40334 Med, and the 40434, 20394 and several others High. It is a relative measure of how much material the device can process, not a security grade - every model on the list meets the same 1 mm x 5 mm destruction standard. It is useful when sizing a machine to a facility's daily volume.
Can it shred CDs, credit cards, staples or paper clips?
No. Dahle rates it for paper only. The cutting cylinders are precision-milled to produce a 1 mm wide particle and metal or rigid plastic will damage them. Remove staples, clips and fasteners first. For optical media in a classified environment you need a separately approved device - Dahle's 747 CS is the EPL-listed machine for CDs, DVDs and Blu-ray.
How does it compare with the 40534?
Same 1 x 4.7 mm particle, same eight sheets a pass, same 52 dB. The 40534 has a wider 12-inch throat and a larger 38-gallon bin, and weighs 146 lb against 105 lb. The important difference is not mechanical: the 40434 appears on the current NSA/CSS Evaluated Products List and the 40534 does not - it was listed in October 2024 but is absent from the January and April 2026 updates. If EPL listing is a requirement, choose the 40434.
What bags fit, and how often will I change them?
Dahle 20725 bags cover 20-30 gallon shredders and come 100 to a box; none are included with the machine. Change frequency depends entirely on volume, but P-7 output is very fine and settles densely once it has been in the bin a while, so the bag gets heavy before it looks full. Lift with two hands and seal the bag before it leaves a secure area.
Will legal-size paper fit?
No. The feed opening is 10.25 inches, sized for letter paper fed long-edge first. Legal (8.5 x 14) and tabloid (11 x 17) will not enter unfolded. Folding halves your effective capacity on an eight-sheet machine. If wide stock is a regular part of your destruction workload and you need P-7, the Dahle 20394 has a 16-inch throat and takes nine sheets.
What is the warranty position?
Two years on the machine, one year on the cutting cylinders. Dahle's lifetime cutting-cylinder warranty covers its P-3 to P-5 models only, so every high-security machine in this family - 40334, 40434, 40534, 20394 and 20434DS - has one-year cylinder cover. On a machine used daily for classified destruction, treat the cutting head as a planned replacement item.