Access door Dimensions lindab | access doors LKCR b 45 80 80 Description The access door is also used as an inspection hatch for rec- tangular ducts. To the access door belongs a fixing frame, which is attached to the rectangular duct. This is normally done with blind rivets through the folded-down edge of the done frame. It can also be provided with folding tabs on request. It is easy to remove the access door from the fixing frame by using over-centre catches. In the insulated versions, the inner side will always be in level with the innermost bound- ary line of the duct, irrespective of whether the duct is insu- lated internally or externally. The table below shows the insulation thickness of the door at different duct insulation alternatives. Can achieve maximum tightness class C. The door should not be placed closer than 50 mm from the nearest side of the rectangular duct. Maximum square measurement of the access door is 1170×1170 mm. Ordering example LKCR 500 300 2 50/100 Product Largest side a Smallest side b Non-insulated duct Type 1 Internally insulated duct Type 2 Externally insulated duct Type 3 Duct/hatch insulation 30/80 mm (Type 2) Duct/hatch insulation 50/100 mm (Type 2) Duct/hatch insulation 70/120 mm (Type 2) Duct/hatch insulation 100/150 mm (Type 2) Duct/hatch insulation 120/170 mm (Type 2) Duct/hatch insulation 40/60 mm (Type 3) Duct/hatch insulation 50/80 mm (Type 3) Duct/hatch insulation 70/100 mm (Type 3) Duct/hatch insulation 140/160 mm (Type 3) a 45 1 Non-insulated duct 2 Internally insulated duct 3 Externally insulated duct Lindab reserves the right to make changes without prior notice 1 2020-10-08
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