BACKER ROD 1/4" TO 4"

MasterSeal 920 is a closed-cell, polyethylene foam joint-filler and backing for elastomeric sealants. Its resilience accommodates dynamic joints. MaterSeal 921 is a reticulated closed-cell polyethylene foam joint-filler and backing for sealants. It compresses easily to accommodate joints of varying widths.
1/4″ – 6,400″
3/8″ – 3,600′
1/2″ – 2,500′
5/8″ – 1,550′
3/4″ – 1,100′
1″ – 550′
1-1/4″ – 400′
1-1/2″ – 552′
2″ – 360′
2-1/2″ – 240′
3″ – 144′
4″ – 90′