ALUMIN

Staircase dimensions (staircase pitch 65۫)

C
 Room height

260

270

280

290

300

310

320

330

340

350

360

380

400

 
 Number of steps

9

9

10

11

11

11

12

12

13

13

13

14

15

A1
 Min. opening length

80

80

90

90

90

100

110

110

120

120

130

130

140

E
 Extension clearance

170

175

180

185

190

195

200

205

210

215

220

225

230

F
 Stair foot rest pont

140

145

150

155

160

165

170

175

180

185

190

195

200

A2
 Opening width
Independent of length and height: 50-55-60-65-70-75-80-85-90-100
 
 Step width
21 – 26 - 31 – 36 (48 cm on request for A2 ≥ 85cm )
B
 Frame width
To customer specifications (standard 20 cm)
D
 Trap door opening
Not required (except for version with handle for opening or closing from above)