Made in USA Galvanized 90? HVAC Duct Register Boot, 6" Diam 2-1/4"x12" Rectangle

Imperial 8 in 30 guage galvanized steel round 90 degree register duct boot

Made in USA Galvanized HVAC Duct Register Boot 90?, 4" x 10" Rectangle x 6" Diam

10 In. X 3-1/4 In. to 5 In. Stack Boot

Made in USA Galvanized HVAC Register 90? Boot Duct, 2-1/4" x 10", 5" Diameter

SOUTHWARK - 27R4126 - 4" X 12" X 6" STRAIGHT REGISTER BOOT - PACK OF 6

Deflecto AB4105 5x4x10 Galvanized Angle Boot 90° HVAC Duct Fitting

SOUTHWARK - 24R4126 - 4" X 12" X 6" - 90 DEGREE REGISTER BOOT - PACK OF 6