As per IS-1838/1961
Swastik expansion joint filler board is a soft fiber board impregnated with bituminous material to render it durable and waterproof. It is compressible and possesses high degree of recovery after compression load is released, thereby ensuring that no free space exists in between joint space.
Swastik ejfb’s are available in 12mm, 18 mm, & 25 mm thickness. This confirms to is: 1838/1961
As fillers between concrete slabs in roads, runways, buildings, bridges, decks and canals.
4’ x 4’ boards of length x breadth: 1.22mtr x 1.22mtr