To ensure market entry and consumer safety, products must meet FSC (Forest Stewardship Council) certification for sustainable wood sourcing. For the North American market, CARB Phase 2 or EPA TSCA Title VI compliance regarding formaldehyde emissions is mandatory. In the EU, look for CE Marking and adherence to EN 14351-1 standards. If the doors are for commercial use, verify fire-rating certifications (e.g., UL 10C or BS 476) which specify the duration (20, 30, 60, or 90 minutes) the door can withstand fire.