Model 30R and 55R Intercept Covers fit standard 30- and 55-gallon open-top steel drums with rolled rims. They include an extra-large dust filter (“V-material”) for maximum filter area. These models are designed for dry applications and can be fitted to any vacuum device or system with airflows shown below. Carbon steel units have a blue powder coat finish. Stainless steel units have a bead-blast finish. Inlet and outlet connections can be mixed or matched. (specify at time of order).