Kvadrat Tonus 4 (BT4)

(resistance to damage from wear and rubbing)

• Heavy-duty specification ASTM 4157-02 modified (#10 cotton duck); 30,000 double rubs Wyzenbeek method.
• Heavy-duty specification ASTM D4966-98 (21 oz. weight); 40,000 cycles Martindale method.

(resistance to burning)

Seating upholstery meets Californian Technical Bulletin 117-2013; vertical surface fabrics meet ASTM-E-84. Tested on Haworth upholstered panels.

(fabric retains its color when exposed to light)

All textiles meet AATCC option 1 or 3 - 2003, Class 4 minimum at 40 hours.

(resistance to pilling, tearing and coming apart at the seams)

Seating upholstery meets:

• Brush pill ASTM D3511, 3-4 minimum
• Breaking strength ASTM D5034-95 50lbs. minimum in warp and weft
• Seam slippage ASTM D3597-02 D434-95 25 lbs. minimum in warp and weft.

(color will not rub off wet or dry fabric to soil clothes , hands or other materials)

Seating upholstery meets AATCC8-Dry Crocking, Grade 4 minimum; vertical surface fabrics meet AATCC8-Dry Crocking, Grade 3 minimum.