The Jackel-SF30PR is our premium residential sewage basin. Constructed from ultra strong, heavy duty structural foam, the SF30PR will provide decades of unfaltering service. The SF30PR has our strongest, thickest rim, the 360 deg EZ Grab&rade; handle. It also incorporates our heavy duty, non-corrosive nylon encapsulated inserts allowing the SF30PR to be gas/radon tight and prohibits odor escape. The ultra-strong hex reinforced bottom will not buckle, deform or puncture, even under the harshest soil or ground water conditions.