The standard slotted frame works ideally with any MSA slotted helmet. The universal frame featuring a heavy duty, flat, rubber strap can be used with slotted and non-slotted MSA helmets. With the unique sloped frame design material slides off the frame and out of site. The optional debris control creates a tight seal between helmet and frame. The elevated temperature versions withstand temps up to 350 °F (176 °C). MSA Faceshield Frame, General Purpose, For Use With: V-Gard® Full Brim Hard Hat, Specifications: Standard Size 3-Point Suspension, Specifications Met: ANSI/ISEA Z87.1-2010, CSA Z94, EN166 , AS/NZS 1337.1:2010, HDPE, Black, 11.3 in L x 3.25 in W x 5.5 in H Dimensions