FRP grating: $28–$45 / ft² (molded vs. Structural Steel, Welding Equipment, Power Tools & Consumables, Ornamental Iron, Gate Hardware, Paint, Floor Gratings, Decorative Panels, Metal Decks & Standing Seam, Valves & Fittings, Mechanical Equipment, Refricool Air Conditioners, Fencing Systems, Garage Door & Much More!Why are our fiberglass grating prices the best? We buy our fiberglass grating and frp structural products in large quantities, giving us bulk discounts and saving tremendously on factory set up costs and initial shipping. We keep high volume items in stock – using the best resins available. This. This guide unpacks the real cost levers so you can specify, budget, and negotiate with confidence. “For. A fiber Bragg grating (FBG) is a microstructure typically inscribed in the core of a single-mode optical fiber, consisting of a periodic variation in the refractive index. This periodic structure acts as a wavelength-specific mirror: it reflects light that satisfies the Bragg condition ${lambda. Molded fiberglass grating is generally more affordable, with prices typically ranging from $25 to $60 per square foot, depending on the thickness and customization options. Is FRP Grating More Expensive Than Steel Grating? While FRP.