mine is rm4.4 psf, total area is around 182 sf
two layer type, thickness not sure

specification (apply to 1/8 inch [3mm] glass)
%visible light transmittance: 9
%visible light reflectance: 24
shading coefficient: 0.29
UV block: 99
%total solar energy rejected: 79

workmanship not so nice, only one tech came to install (did it very fast) [imagine my house have two big and tall sliding door glass]
cutting not straight, install with no chair or small ladder, high area, he has to install with heels up (balance sure out)