Hercules Industries provides an efficient Square to Round connection piece that is suitable for most HVAC applications. Connects insulated flexible duct or round pipe to a flat surface Can be used to route air from any side of the plenum or a rectangular duct run.  Fits most HVAC types for universal application and our manufacturng style with a tacky seal helps create a secure, airtight seal.


SKU Description Prod Info Price/Units Quantity
SR664 SQ TO RD 6X6X4 W/PG Product_Details EA
SR665 SQ TO RD 6X6X5 W/PG Product_Details EA
SR7X7X6 SQ TO ROUND 7X7X6 W/PG 20/BOX Product_Details EA
SR884 SQ TO RD 8X8X4 W/PG Product_Details EA
SR885 SQ TO RD 8X8X5 W/PG Product_Details EA
SR886 SQ TO RD 8X8X6 W/PG Product_Details EA
SR8X8X7 SQ TO ROUND 8X8X7 W/PG Product_Details EA
SR9X9X6 SQ TO RD 9X9X6 W/PG Product_Details EA
SR9X9X8 SQ TO RD 9X9X8 W/PG Product_Details EA
SR106 SQ TO RD 10X10X6 W/PG Product_Details EA
SR107 SQ TO RD 10X10X7 W/PG Product_Details EA
SR10X8 SQ TO RD 10X10X8 W/PG Product_Details EA
SR10X9 SQ TO RD 10X10X9 W/PG Product_Details EA
SR12126 SQ TO RD 12X12X6 W/PG Product_Details EA
SR12127 SQ TO RD 12X12X7 W/PG Product_Details EA
SR12129 SQ TO RD 12X12X9 W/PG Product_Details EA
SR12X10 SQ TO RD 12X12X10 W/PG Product_Details EA
SR12X8 SQ TO RD 12X12X8 W/PG Product_Details EA
SR1410 SQ TO RD 14X14X10 W/PG Product_Details EA
SR1412 SQ TO RD 14X14X12 W/PG Product_Details EA
SR148 SQ TO RD 14X14X8 W/PG Product_Details EA
SR1514 SQ TO RD 15X15X14 W/PG Product_Details EA
SR15X10 SQ TO RD 15X15X10 W/PG Product_Details EA
SR15X12 SQ TO RD 15X15X12 W/PG Product_Details EA
SR1610 SQ TO RD 16X16X10 W/PG Product_Details EA
SR1612 SQ TO RD 16X16X12 W/PG Product_Details EA
SR1614 SQ TO RD 16X16X14 W/PG Product_Details EA
SR1812 SQ TO RD 18X18X12 W/ PG Product_Details EA
SR1814 SQ TO RD 18X18X14 W/ PG Product_Details EA
SR1816 SQ TO RD 18X18X16 W/ PG Product_Details EA
SR18X10 SQ TO RD 18X18X10 W/PG Product_Details EA
SR2014 SQ TO RD 20X20X14 W/PG Product_Details EA
SR2018 SQ TO RD 20X20X18 W/PG Product_Details EA
SR2020 SQ TO RD 20X20X20 W/PG Product_Details EA
SR221010 SQ TO RD 22X10X10 W/PG Product_Details EA
SR22108 SQ TO RD 22X10X8 W/PG Product_Details EA
SR2216 SQ TO RD 22X22X16 W/PG Product_Details EA
SR2218 SQ TO RD 22X22X18 W/PG Product_Details EA
SR222210 SQ TO RD 22X22 W/10" COLLAR Product_Details EA
SR222212 SQ TO RD 22X22 W/12" COLLAR Product_Details EA
SR222214 SQ TO RD 22X22 W/14" CLLR W/PG Product_Details EA
SR22226 SQ TO RD 22X22 W/6" COLLAR Product_Details EA
SR22228 SQ TO RD 22X22 W/8" COLLAR Product_Details EA
SR2418 SQ TO RD 24X24X18 W/PG Product_Details EA