Duct Incorporated Laserlock is the BEST CHOICE for Modular Clamp-Together Ducting for dust, oil mist, fume, and smoke collection. Innovative rolled edges and Clamp-Together design allow for easy installation in about half the time of traditional ducting with no welds, rivets, or screws. Laserlock Ducting can be taken apart and re-configured to accommodate floor plan changes.LaserLock Ducting is available in stainless and galvanized steel and works well on both new and existing systems. Most orders ship within 4 days. Call 1-877-BUY-DUCT.