All Style Industries EPDM rubber 12 inch maximum diameter Retro-Split™ Storm Collars (# 6640503 & 6591561) weatherproof roof penetrations that cannot easily be taken apart or disassembled and are designed to counter flash a roof jack flashing that has been installed into a roofing system when an "over the top" installation is not possible or desired. Retro-Split™ Storm Collars open to allow an installation from the side. By utilizing our patented "push together" skirt locks the collars can wrap around any geometric shape penetration.
Largest outside diameter for this large Retro-Split Collar is up to 12 inches. Included are two (2) wrap around skirts, one 12 inch diameter plug (specify geometry/pipe size) and one stainless steel hose clamp.
This large Retro-Split collar may require two people when installing.
Standard is black. Call for additional colors such as white which is demonstrated in the photographs.