Expires 10/4/2014. Not valid with other offers or prior purchases. Buy 1 window, get the 2nd at 40% off and 12 mos. no payments, no interest when you purchase four or more windows or patio doors between 8/10/14 & 10/4/14 with approved credit. 2nd window is of equal or lesser value. APR of 16.93% as of 7/1/14.. Repayment terms from 0 to 12 mos. Interest accrues from date of purchase but waived if paid in full within 12 mos. Available only at participating locations. Not valid with any other offer. Coupon void if altered.