The cost of invisible grilles for HDB flats in Singapore varies by supplier and is often calculated both by apartment type or for every square foot. Offers from suppliers like Endo Grilles start off from $499 for any three-place HDB, $639 for any four-area, and $799 for a five-room. Top rated 1 Singapore Basic safety Window has promotional pricing at $one,two hundred for 3-place, $1,500 for four-room, and $1,900 for five-space flats. Alternatively, fastened grilles can Expense from $four.ninety per sq. foot, while openable sorts are about $18.fifty psf. The ultimate Expense is affected by elements like the grade of chrome steel utilized (316 is usually a premium selection), the scale from here the window, and installation complexity. Various vendors provide these expert services, including Key Furnishing with showrooms in Outram, Jurong East, and Tampines; DeGrille Pte. Ltd. at fifteen Changi North Road one; and Diamond Grille Units at 47 Kallang Pudding Road. Numerous companies offer you no cost on-website measurements and rates to supply precise pricing.