Mullion Mate Partition Gap Closures

Mullion Mate^® is an adjustable partition closure that creates a seamless transition between window mullions (curtain walls), windows, and partition walls. Aesthetically pleasing, these spring-loaded partition closures bridge the gap to fit a variety of openings and provide excellent noise reduction up to 60 STC. Finished to match mullions, factory cut to length, and arriving to the jobsite pre-assembled, Mullion Mate’s ease of installation creates the solution to an everyday problem.

Designed to Accommodate Lateral Movement up to 1-15/16″

Lateral movement in buildings is caused by SEISMIC, THERMAL, and WIND SWAY activity. Gordon’s Mullion Mate products allow lateral movement, while providing a termination of a wall at the curtain wall and an acoustical barrier.

Design Attributes

• For vertical junctions between partition walls and window mullions
• Finished to match mullions
• Clear, medium, or dark bronze anodized, and Champagne
• Field paintable finish
• Powder coated in standard or custom colors (AAMA2604/AAMA2605)
• Custom Finishes available upon request
• Factory spring loaded to fit a variety of opening sizes
• Pre-assembled for ease of installation
• Factory cut to desired height, maximum 192″
• Optional Mullion Mate end cap to finish partition walls

Series 60

• Closes Gaps from 4” up to 8-1/2”
• Double Mullion Mate® design surrounds the window mullion, increasing STC up to 60.
• Patent Pending

Series 60 Sizes

Mullion Mate 4 – 4″ minimum to 5-7/16″ maximum opening
Mullion Mate 5.5 – 5-1/2″ minimum to 6-15/16″ maximum opening
Mullion Mate 7 – 7″ minimum to 8-1/2″ maximum opening

Series 40

• Closes Gaps from 2” up to 14”
• Provides up to 56 STC

Series 40 Sizes

Mullion Mate 2 – 2″ minimum to 2-15/16″ maximum opening
Mullion Mate 3 – 3″ minimum to 3-15/16″ maximum opening
Mullion Mate 4 – 4″ minimum to 4-15/16″ maximum opening
Mullion Mate 5 – 5″ minimum to 6-15/16″ maximum opening
Mullion Mate 7 – 7″ minimum to 8-15/16″ maximum opening
Mullion Mate 9 – 9″ minimum to 14″ maximum opening

Series 30

• Closes Gaps from 2” up to 14”
• Provides up to 37 STC

Series 30 Sizes

Mullion Mate 2 – 2″ minimum to 2-15/16″ maximum opening
Mullion Mate 3 – 3″ minimum to 3-15/16″ maximum opening
Mullion Mate 4 – 4″ minimum to 4-15/16″ maximum opening
Mullion Mate 5 – 5″ minimum to 6-15/16″ maximum opening
Mullion Mate 7 – 7″ minimum to 8-15/16″ maximum opening
Mullion Mate 9 – 9″ minimum to 14″ maximum opening

Finish Options

AAMA 2604 Powder Coat Finishes Download PDF

AAMA 2605 Powder Coat Finishes Download PDF

Antimicrobial Finishes