Marvin Magnum Dual Window Balance

DUAL BALANCE SYSTEMS FOR THE MAGNUM DOUBLE HUNG TILT PAC
Manufacturer numbers are stamped on the balance tube assembly above the locking terminal.
When ordering a replacement dual balance system, specify the following:
1. Original order number if available
2. The balance size (see illustration). Often the two
numbers on the tubes are different. Always provide both numbers. For example: 2530/2530 (both numbers the same), 4110/4130 (different numbers)
3. The top or bottom sash;
4. The weight of the sash.
5. The quantity of dual balance systems. Do NOT specify as pairs or sets. If one system is needed, specify: quantity of 1. If four systems are needed, specify a quantity of 4.