The Martin Yale PL21 is steadfast and reliable, delivering a maximum cut thickness of 2 7/8". Clamp and back-stop for the machine are manually operated by way of crank handle, blade motor is electric (220VAC single phase). The maximum back-stop position is 21". Unit features all steel construction and is assembled in the U.S.A. One of the best kept secrets in the industry, the PL21 is sure to be a success in any environment. Don't forget, we also have top notch tech support online and over the phone. With a wealth of support info and friendly, insightful customer service we're sure to keep you running. Note: Side tables are optional (PL2T). Manual paper clamp allows more pressure than auto-clamp units Manual back gauge with analog readout Cutting line light for easy reference and quick set-ups Attachable false clamp for carbonless and other delicate papers Legs adjust up to 1 1/2" to facilitate leveling Cuts paper stacks up to 2 7/8" high 16" of table space in front of blade Minimum cut of 1.37" avoids paper waste Dual Push-button cutting controls Made In U.S.A. Model#: PL21 Cutting Length: 21" Cutting Width: 21" Maximum Stack Height: 2 7/8" Electrical: 220-240 V, Single Phase, Nema Plug Configuration: 6-20R Footprint Dimensions: 34 1/4 x 47 1/2 x 52 Shipping Dimensions: 42"L x 51"W x 59"H Cubic Equivalent: 73.1 Unit Weight: 720 lbs. Shipping Weight: 732 Lbs. UPC Code: 11991-21000