This Pleasant Hearth Arrington Fireplace Glass Door reduces heat loss up the chimney by 90 when the fireplace is not in use, plus add style and function. When you"re not enjoying a fire, simply close the clear tempered safety glass to minimize heat and cool air loss. This handsome accessory features a high-temperature classic black powder-coated finish with gold-colored trim and easy-grip 4in. door handles. Fits masonry fireplace openings 30in. to 37in. wide and 22 1/2in. to 29 1/2in. high. For masonry fireplaces only. Not for use on pre-fabricated fireplaces. U.S.A. Dimensions W x D x H in. 37 1/2 x 1 7/8 x 30, Fits Opening W x H in. 30 to 37 x 22 1/2 to 29 1/2, Finish Type Black/Gold, Style Arrington. Reduces heat loss up your chimney by 90 when the fireplace is not in use Bi-fold doors with easy-catch magnets open 180 for a full view of your fireplace Sturdy metal mesh panels Thick 3/16in. clear tempered safety glass 1in. thick welded construction Simple do-it-yourself installation