If building quality high efficiency, insulating glass units is what you want to do, the CRL Deluxe Starter Kit is what you need. This state-of-the-art kit comes with everything you need (except the glass) to build I.G. units whether they are square, rectangular, or even circular, all without the use of a spacer bending machine. This Deluxe Starter Kit comes complete so start-up is a breeze. Super Spacer is one of the best materials to use in manufacturing insulated glass units because of its superior insulating foam. This foam essentially eliminates perimeter edge condensation and substantially reduces overall window heat loss. This flexible spacer also accommodates glass bowing and thermal movement. Excellent sound insulation properties also add to the list of Super Spacer's attributes. Finally, there is no absorbent to add because there is a high quantity of 3A molecular sieve already inside of Super Spacer's quality silicone foam.This kit also comes with a CRL Hot Melt Butyl Dispensing Machine which is the fastest way to produce insulated glass units. We also include 96 pounds of Butyl, which is the best and only butyl recommended for use in this machine. This machine features an all-mechanical system which doesn't use any air, so there is less down time and more production. The eight foot (2438 millimeter) dispensing hose heats from 350 to 450 degrees (177 to 232 Celsius), delivering the butyl at optimum temperature.Kit Includes: