"Click below to buy on Amazon: Smoke-Free impulse sealing with self-compensation assures strong tough seals with all filmsbr Unique energy saving convection shrink tunnel outperforms old fashion 220 volt bulky tunnelsbr Simply plug into any 120 Volt outlet for immediate use No costly 220 Volt wiring requiredbr Designed for easy Do-It-Yourself servicing Plus friendly technical assistance always availablebr To Calculate your Required FILM WIDTH ADD THICKNESS WIDTH OR LENGTH 2 INCHES br Seal 'N Shrink Complete System (Sealer + Tunnel)"