8-Inch Ceiling Support Box - Black Finish (Square) checklist-Estimated Lead Time 3-5 Working Days They are manufactured in lengths

They are manufactured in lengths ranging from 20 ft-30 ft

Thermafiber UltraBatt mineral wool insulation is designed to provide excellent thermal insulation

it offers a perfect balance of strength and versatility

9-steps provide access to your attic

8-Inch Ceiling Support Box - Black Finish (Square) checklist-Estimated Lead Time 3-5 Working Days They are manufactured in lengthsThis 8 Inch Ceiling Support Box serves as the primary load bearing anchor for your chimney system. Capable of supporting up to 60 feet of vertical pipe, it creates a fire safe transition through flat or cathedral ceilings. The box features a matte black finish to match standard interior stove pipe, providing a professional, polished look while maintaining the required 2 inch clearance to combustibles.