The distance between the "ladders" is kept by extra strong "rattle-free" tapes that can be easily replaced

This helps to prevent you from getting injuries to your back

which means that a standard roof well can be mounted in a tight connection

knees and ankles as a result of being inattentive to where the last step on the ladder is

Installation instructions for roofing felt

Rektangulær brønd 68 90 grader bukket flange SBS PF 5000, 500x100x400 mm 0 grader rør fald - 90 grader rør ende Vandnæse standardmål The distance between the "ladders"Rectangular roof well for horizontal installation, with flat flange Dimension: 500x100x400 mm Material tube protection ring: Acid resistant, stainless steel AISI 316 EN 1. 4401 Material flange: Stainless steel AISI 304 EN 1. 4301 Membrane type: SBS PF 5000 Angle: 0 90 degrees Touching: Right The roof well is primarily used for horizontal installation in masonry crown. With the flat flange, the roof well is mounted at a level above the roof surface and