PBL Muslin Black White 9ft x 15ft Support System Heavy Duty Steve Kaeser Photographic Lighting 1...Brand new ultra white 9' x 15' muslin, 100% cotton, non-glare finish. 1...9' x 15' seamless one black, 100% cotton, Matt finish non reflective. 1. Background Support System with 9' crossbar Holds canvas, muslin or paper up to 9' wide, Heavy duty stands extend up to 8.5', Compacts down to 38".