Skylux piramide acrylaat lichtkoepel enkelwandig pmma helder 0400 x 0700 mm KQPV1620 MKS 1000 1000 93 W m²K in combination with 93 W m²K in combination with a single walled skylight Burglar resistant Yes Fall through safety Only in combination with a polycarbonate plastic skylight Acoustic value Rw 40 dB LT value 68% in combination with a single walled clear acrylic skylight Is this electric roof access with 30 20 PVC curb 800 x 800 mm Please note