| Non Cold-bridge access door for central air conditioning ，we use high strenght plastic as metrial for inside and outside frame,plate use galvanized sheet；color plate ；Stainless Steel Plate；spraying plate.(as requirement).and then inject the polyurethance foaming.which have good thermal insulation、Reliably Sealing ，nice appearance,easy to install. | |||||||||
specification Plate density: 35-60KG/M3 Thickness:25mm-50mm Air leakage rate:≤1% Useage temperature:-30℃～+70℃ Heat conductivity coefficient：0.0241w/m.k water absorption ：≤ 4%
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