USC S-4756 CORRUGATED BOXES,17 1/4X11 1/4X7

USC S-4756 - 17 1/4 X 11 1/4 X 7" CORRUGATED BOXES - SHIPPING PRINTED MATERIALS? CHOOSE FROM AN EXTENSIVE SELECTION. HOLDS REAMS, FLYERS AND FORMS. - GLUED SEAMS. MEETS ASTM D5118 AND D3951. 200# TEST VS 32 ECT (EDGE CRUSH TEST) : 200# TEST: 30-50% STRONGER BURSTING STRENGTH. RECOMMENDED FOR SHIPPING UP TO 40LBS. 32 ECT: RECOMMENDED FOR SHIPPING UP TO 30LBS. POUND TEST REFERS TO BURSTING STRENGTH: 200# TEST BOXES WITHSTAND 200LBS/SQ. IN. OF SIDE WALL PRESSURE BEFORE BURSTING. ECT REFERS TO STACKING STRENGTH: 32 ECT BOXES WITHSTAND 32LBS/LINEAR INCH OF STACKING WEIGHT BEFORE CRUSHING. AN ALTERNATIVE FOR LIGHTWEIGHT SHIPMENTS. BOX STRENGTH GUIDELI - EQUAL TO S-4756