Lobster cans are a two piece riveted fitting cover produced for any fitting and in any size. No more labor to install than a pressed elbow. Makes no difference how many miters your covering, a 90 is a 90 ; a 45 is a 45. Negative throat or positive throat is just as easy to install. No more laborious gores or butterflies to produce or install.
As there are thousands of fitting cover possibilities based on pipe size, radius and insulation thickness the following list is for your comparative analysis and not a complete list. Any fitting and in any size quoted and shipped upon request.